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acid</title> <meta name="description" content="Search results for: free fatty acid"> <meta name="keywords" content="free fatty acid"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="free fatty acid"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 6624</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: free fatty acid</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6624</span> Cadaver Free Fatty Acid Distribution Associated with Burial in Mangrove and Oil Palm Plantation Soils under Tropical Climate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Siti%20Sofo%20Ismail">Siti Sofo Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Siti%20Noraina%20Wahida%20Mohd%20Alwi"> Siti Noraina Wahida Mohd Alwi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamad%20Hafiz%20Ameran"> Mohamad Hafiz Ameran</a>, <a href="https://publications.waset.org/abstracts/search?q=Masrudin%20M.%20Yusoff"> Masrudin M. Yusoff</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Locating clandestine cadaver is crucially important in forensic investigations. However, it requires a lot of man power, costly and time consuming. Therefore, the development of a new method to locate the clandestine graves is urgently needed as the cases involve burial of cadaver in different types of soils under tropical climates are still not well explored. This study focused on the burial in mangrove and oil palm plantation soils, comparing the fatty acid distributions in different soil acidities. A stimulated burial experiment was conducted using domestic pig (Sus scrofa) to substitute human tissues. Approximately 20g of pig fatty flesh was allowed to decompose in mangrove and oil palm plantation soils, mimicking burial in a shallow grave. The associated soils were collected at different designated sampling points, corresponding different decomposition stages. Modified Bligh-Dyer Extraction method was applied to extract the soil free fatty acids. Then, the obtained free fatty acids were analyzed with gas chromatography-flame ionization (GC-FID). A similar fatty acid distribution was observed for both mangrove and oil palm plantations soils. Palmitic acid (C₁₆) was the most abundance of free fatty acid, followed by stearic acid (C₁₈). However, the concentration of palmitic acid (C₁₆) higher in oil palm plantation compare to mangrove soils. Conclusion, the decomposition rate of cadaver can be affected by different type of soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clandestine%20grave" title="clandestine grave">clandestine grave</a>, <a href="https://publications.waset.org/abstracts/search?q=burial" title=" burial"> burial</a>, <a href="https://publications.waset.org/abstracts/search?q=soils" title=" soils"> soils</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid" title=" free fatty acid"> free fatty acid</a> </p> <a href="https://publications.waset.org/abstracts/87338/cadaver-free-fatty-acid-distribution-associated-with-burial-in-mangrove-and-oil-palm-plantation-soils-under-tropical-climate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87338.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">399</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6623</span> Comparison of Punicic Acid Amounts in Abdominal Fat Farm Feeding Hy-Line Chickens</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ozcan%20Baris%20Citil">Ozcan Baris Citil</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehmet%20Akoz"> Mehmet Akoz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Effects of fatty acid composition and punicic acid contents of abdominal fat of Hy-line hens were investigated by the gas chromatographic method. Total 30 different fatty acids were determined in fatty acid compositions of eggs. These fatty acids were varied between C 8 to C 22. The punicic acid content of abdominal fats analysed was found to be higher percentages in the 90th day than those of 30th and 60th day. At the end of the experiment, total punicic acid contents of abdominal fats were significantly increased. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title="fatty acids">fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20chromatography" title=" gas chromatography"> gas chromatography</a>, <a href="https://publications.waset.org/abstracts/search?q=punicic%20acid" title=" punicic acid"> punicic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=abdominal%20fats" title=" abdominal fats "> abdominal fats </a> </p> <a href="https://publications.waset.org/abstracts/47496/comparison-of-punicic-acid-amounts-in-abdominal-fat-farm-feeding-hy-line-chickens" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47496.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">347</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6622</span> Fatty Acid and Amino Acid Composition in Mene maculata in The Sea of Maluku</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Semuel%20Unwakoly">Semuel Unwakoly</a>, <a href="https://publications.waset.org/abstracts/search?q=Reinner%20Puppela"> Reinner Puppela</a>, <a href="https://publications.waset.org/abstracts/search?q=Maresthy%20Rumalean"> Maresthy Rumalean</a>, <a href="https://publications.waset.org/abstracts/search?q=Healthy%20Kainama"> Healthy Kainama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fish is a kind of food that contains many nutritions, one of those is the long chain of unsaturated fatty acids as omega-3 and omega-6 fatty acids and essential amino acid in enough amount for the necessity of our body. Like pelagic fish that found in the sea of Maluku. This research was done to identify fatty acids and amino acids composition in Moonfish (<em>M. maculata</em>) using transesterification reaction steps and Gas Chromatograph-Mass Spectrophotometer (GC-MS) and High-Performance Liquid Chromatography (HPLC). The result showed that fatty acids composition in Moonfish (<em>M. maculata</em>) contained tridecanoic acid (2.84%); palmitoleic acid (2.65%); palmitic acid (35.24%); oleic acid (6.2%); stearic acid (14.20%); and 5,8,11,14-eicosatetraenoic acid (1.29%) and 12 amino acids composition that consist of 7 essential amino acids, were leucine, isoleucine, valine, phenylalanine, methionine, lysine, and histidine, and also 5 non-essential amino acid, were tyrosine, glycine, alanine, glutamic acid, and arginine.Thus, these fishes can be used by the people to complete the necessity of essential fatty acid and amino acid. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moonfish%20%28M.%20maculata%29" title="Moonfish (M. maculata)">Moonfish (M. maculata)</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=amino%20acid" title=" amino acid"> amino acid</a>, <a href="https://publications.waset.org/abstracts/search?q=GC-MS" title=" GC-MS"> GC-MS</a>, <a href="https://publications.waset.org/abstracts/search?q=HPLC" title=" HPLC"> HPLC</a> </p> <a href="https://publications.waset.org/abstracts/75018/fatty-acid-and-amino-acid-composition-in-mene-maculata-in-the-sea-of-maluku" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75018.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">249</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6621</span> Application of Tocopherol as Antioxidant to Reduce Decomposition Process on Palm Oil Biodiesel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Supriyono">Supriyono</a>, <a href="https://publications.waset.org/abstracts/search?q=Sumardiyono"> Sumardiyono</a>, <a href="https://publications.waset.org/abstracts/search?q=Rendy%20J.%20Pramono"> Rendy J. Pramono</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biodiesel is one of the alternative fuels promising for substituting petrodiesel as energy source which has an advantage as it is sustainable and eco-friendly. Due to the raw material that tends to decompose during storage, biodiesel also has the same characteristic that tends to decompose during storage. Biodiesel decomposition will form higher acid value as the result of oxidation to double bond on a fatty acid compound on biodiesel. Thus, free fatty acid value could be used to evaluate degradation of biodiesel due to the oxidation process. High free fatty acid on biodiesel could impact on the engine performance. Decomposition of biodiesel due to oxidation reaction could prevent by introducing a small amount of antioxidant. The origin of raw materials and the process for producing biodiesel will determine the effectiveness of antioxidant. Biodiesel made from high free fatty acid (FFA) crude palm oil (CPO) by using two steps esterification is vulnerable to oxidation process which is resulted in increasing on the FFA value. Tocopherol also known as vitamin E is one of the antioxidant that could improve the stability of biodiesel due to decomposition by the oxidation process. Tocopherol 0.5% concentration on palm oil biodiesel could reduce 13% of increasing FFA under temperature 80 °C and exposing time 180 minute. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title="antioxidant">antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=palm%20oil%20biodiesel" title=" palm oil biodiesel"> palm oil biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=decomposition" title=" decomposition"> decomposition</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidation" title=" oxidation"> oxidation</a>, <a href="https://publications.waset.org/abstracts/search?q=tocopherol" title=" tocopherol"> tocopherol</a> </p> <a href="https://publications.waset.org/abstracts/49087/application-of-tocopherol-as-antioxidant-to-reduce-decomposition-process-on-palm-oil-biodiesel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49087.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6620</span> Human Health and Omega 3 Fatty Acids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jinpa%20Palmo">Jinpa Palmo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In many research, omega 3 fatty acid which is a polyunsaturated fatty acids is proved to be very important and essential nutrients having many different health benefits but apart from other fatty acids, it cannot be synthesise by our human body. Therefore, we have to get these fatty acids by consuming diets and supplements rich in it. Even though human beings can live by consuming other important nutrients but can live much healthier and longer by consuming omega 3 fatty acids. American heart association AHA recommends for daily intake of omega 3 fatty acids specially by those people with coronary heart disease. Fish considering as nutritional valuable animal is mostly due to its lipid content (fish oil) in which these omega 3 fatty acids are present very significantly. Fish does not actually produce these omega 3 fatty acid in their body, but receive these fatty acids through the food web in which phytoplankton are the chief source of these omega fatty acids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title="fatty acid">fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=fish" title=" fish"> fish</a>, <a href="https://publications.waset.org/abstracts/search?q=disease" title=" disease"> disease</a>, <a href="https://publications.waset.org/abstracts/search?q=health" title=" health"> health</a> </p> <a href="https://publications.waset.org/abstracts/157895/human-health-and-omega-3-fatty-acids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157895.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">107</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6619</span> Effect of Gamma Radiation, Age of Paddy, Rice Variety and Packaging Materials on the Surface Free Fatty Acid Content of Brown Rice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zenaida%20M.%20De%20Guzman">Zenaida M. De Guzman</a>, <a href="https://publications.waset.org/abstracts/search?q=Davison%20T.%20Baldos"> Davison T. Baldos</a>, <a href="https://publications.waset.org/abstracts/search?q=Gilberto%20T.%20Diano"> Gilberto T. Diano</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeff%20Darren%20G.%20Valdez"> Jeff Darren G. Valdez</a>, <a href="https://publications.waset.org/abstracts/search?q=Levelyn%20Mitos%20Tolentino"> Levelyn Mitos Tolentino</a>, <a href="https://publications.waset.org/abstracts/search?q=Gina%20B.%20Abrera"> Gina B. Abrera</a>, <a href="https://publications.waset.org/abstracts/search?q=Ma.%20Lucia%20Cobar"> Ma. Lucia Cobar</a>, <a href="https://publications.waset.org/abstracts/search?q=Cristina%20Gragasin"> Cristina Gragasin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> One of the factors affecting the quality of brown rice is the free fatty acid produced from surface lipids. It is the purpose of the study to determine the effect of gamma radiation, packaging materials and age and variety of paddy on the surface free fatty acid content using two different brown rice variety, namely, RC-160 and SL-7, packed in two different packaging materials, namely, regular polyethylene bag and Super bag irradiated at 0.5 and 1.0 kGy. Brown rice was produced from 2-week old (Lot 1) and two months old paddy (Lot 2) and irradiated at the Co-60 Multipurpose Irradiation Facility, PNRI. The surface Free Fatty Acid (FFA) content was obtained following the AOCS Official Method (1982) with some modifications. The experiment was laid out using Split-Plot Randomized Control Block Design. Analysis of variance (ANOVA) showed that the effects of variety, age of paddy and interactions of both were both significant. The surface FFA of SL-7 variety was found to be significantly higher than the RC-160 variety for all radiation doses. Likewise, Lot 2 was observed to have higher surface FFA than Lot 1 regardless of packaging material and radiation dose. It was observed that the surface FFA of both varieties packed in both packaging materials increased significantly up to the 2nd or 3rd month of storage and remains the same until the 5th month. On the other hand, radiation dose did not significantly affect the surface free fatty acid content for all storage/sampling time while the packaging material significantly interacts with the type of variety and radiation dose. Gamma radiation was proven to have no significant effect on the surface free fatty acid at 0.5 and 1.0 kGy and further analyses are needed to determine the action of gamma radiation to the activity of enzyme (lipase-induced and microbial) responsible for the production of other lipolytic products and the effect of gamma radiation on the integrity of the packaging materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=brown%20rice" title="brown rice">brown rice</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid" title=" free fatty acid"> free fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=gamma%20radiation" title=" gamma radiation"> gamma radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=polyethylene%20bag" title=" polyethylene bag "> polyethylene bag </a> </p> <a href="https://publications.waset.org/abstracts/58253/effect-of-gamma-radiation-age-of-paddy-rice-variety-and-packaging-materials-on-the-surface-free-fatty-acid-content-of-brown-rice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58253.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">389</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6618</span> Study of Coconut and Babassu Oils with High Acid Content and the Fatty Acids (C6 to C16) Obtained from These Oils</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fl%C3%A1vio%20A.%20F.%20da%20Ponte">Flávio A. F. da Ponte</a>, <a href="https://publications.waset.org/abstracts/search?q=Jackson%20Q.%20Malveira"> Jackson Q. Malveira</a>, <a href="https://publications.waset.org/abstracts/search?q=Jos%C3%A9%20%20A.%20S.%20Ramos%20Filho"> José A. S. Ramos Filho</a>, <a href="https://publications.waset.org/abstracts/search?q=Monica%20C.%20G.%20Albuquerque"> Monica C. G. Albuquerque</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The vegetable oils have many applications in industrial processes and due to this potential have constantly increased the demand for the use of low-quality oils, mainly in the production of biofuel. This work aims to the physicochemical evaluation of babassu oil (Orbinya speciosa) and coconut (Cocos nucifera) of low quality, as well the obtaining the free fatty acids 6 to 16 carbon atoms, with intention to be used as raw material for the biofuels production. The babassu oil and coconut low quality, as well the fatty acids obtained from these oils were characterized as their physicochemical properties and fatty acid composition (using gas chromatography coupled to mass). The NMR technique was used to assess the efficiency of fractional distillation under reduced pressure to obtain the intermediate carbonic chain fatty acids. The results showed that the bad quality in terms of physicochemical evaluation of babassu oils and coconut oils interfere directly in industrial application. However the fatty acids of intermediate carbonic chain (C6 to C16) may be used in cosmetic, pharmaceutical and particularly as the biokerosene fuel. The chromatographic analysis showed that the babassu oil and coconut oil have as major fatty acids are lauric acid (57.5 and 38.6%, respectively), whereas the top phase from distillation of coconut oil showed caprylic acid (39.1%) and major fatty acid. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=babassu%20oil%20%28Orbinya%20speciosa%29" title="babassu oil (Orbinya speciosa)">babassu oil (Orbinya speciosa)</a>, <a href="https://publications.waset.org/abstracts/search?q=coconut%20oil%20%28Cocos%20nucifera%29" title=" coconut oil (Cocos nucifera)"> coconut oil (Cocos nucifera)</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass" title=" biomass"> biomass</a> </p> <a href="https://publications.waset.org/abstracts/48733/study-of-coconut-and-babassu-oils-with-high-acid-content-and-the-fatty-acids-c6-to-c16-obtained-from-these-oils" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48733.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6617</span> Free Fatty Acid Assessment of Crude Palm Oil Using a Non-Destructive Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Siti%20Nurhidayah%20Naqiah%20Abdull%20Rani">Siti Nurhidayah Naqiah Abdull Rani</a>, <a href="https://publications.waset.org/abstracts/search?q=Herlina%20Abdul%20Rahim"> Herlina Abdul Rahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Rashidah%20Ghazali"> Rashidah Ghazali</a>, <a href="https://publications.waset.org/abstracts/search?q=Noramli%20Abdul%20Razak"> Noramli Abdul Razak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Near infrared (NIR) spectroscopy has always been of great interest in the food and agriculture industries. The development of prediction models has facilitated the estimation process in recent years. In this study, 110 crude palm oil (CPO) samples were used to build a free fatty acid (FFA) prediction model. 60% of the collected data were used for training purposes and the remaining 40% used for testing. The visible peaks on the NIR spectrum were at 1725 nm and 1760 nm, indicating the existence of the first overtone of C-H bands. Principal component regression (PCR) was applied to the data in order to build this mathematical prediction model. The optimal number of principal components was 10. The results showed R2=0.7147 for the training set and R2=0.6404 for the testing set. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=palm%20oil" title="palm oil">palm oil</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=NIRS" title=" NIRS"> NIRS</a>, <a href="https://publications.waset.org/abstracts/search?q=regression" title=" regression"> regression</a> </p> <a href="https://publications.waset.org/abstracts/13718/free-fatty-acid-assessment-of-crude-palm-oil-using-a-non-destructive-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13718.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">507</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6616</span> Comparison Physicochemical Properties of Hexane Extracted Aniseed Oil from Cold Press Extraction Residue and Cold Press Aniseed Oil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Derya%20%C3%96ren">Derya Ören</a>, <a href="https://publications.waset.org/abstracts/search?q=%C5%9Eeyma%20Akal%C4%B1n"> Şeyma Akalın</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cold pres technique is a traditional method to obtain oil. The cold-pressing procedure, involves neither heat nor chemical treatments, so cold press technique has low oil yield and cold pressed herbal material residue still contains some oil. In this study, the oil that is remained in the cold pressed aniseed extracted with hegzan and analysed to determine physicochemical properties and quality parameters. It is found that the aniseed after cold press process contains % 10 oil. Other analysis parametres free fatty acid (FFA) is 2,1 mgKOH/g, peroxide value is 7,6 meq02/kg. Cold pressed aniseed oil values are determined for fatty acid (FFA) value as 2,1 mgKOH/g, peroxide value 4,5 meq02/kg respectively. Also fatty acid composition is analysed, it is found that both of these oil have same fatty acid composition. The main fatty acids are; oleic, linoleic, and palmitic acids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aniseed%20oil" title="aniseed oil">aniseed oil</a>, <a href="https://publications.waset.org/abstracts/search?q=cold%20press" title=" cold press"> cold press</a>, <a href="https://publications.waset.org/abstracts/search?q=extraction" title=" extraction"> extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=residue" title=" residue"> residue</a> </p> <a href="https://publications.waset.org/abstracts/37167/comparison-physicochemical-properties-of-hexane-extracted-aniseed-oil-from-cold-press-extraction-residue-and-cold-press-aniseed-oil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37167.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">405</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6615</span> Enzymatic Remediation in Standard Crude Palm Oil for Superior Quality Oil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haniza%20Ahmad">Haniza Ahmad</a>, <a href="https://publications.waset.org/abstracts/search?q=Norliza%20Saparin"> Norliza Saparin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmadilfitri%20Md%20Noor"> Ahmadilfitri Md Noor</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Suria%20Affandi%20Yusoff"> Mohd Suria Affandi Yusoff</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Enzymatic remediation is applied in low free fatty acid (FFA) (<4%) crude palm oil (CPO) to investigate if further FFA reduction is able to take place to produce premium CPO (<1% FFA). There are four different lipase Candida Antartica brands used in this study. Samples submit to enzymatic remediation using rotary evaporator under 100mbar vacuum with rotation at 260rpm. Samples were taken at 4hours, 8hours and 24hours for analyses. FFA less than 1% was achieved after 24hours reaction with 1% enzyme and 2% glycerol. The FFA reduction was intensified with the presence of glycerol who provides more sites for fatty acid attachment. At 2% glycerol, 71-88% FFA was reduced whereas at 1% glycerol, 46-75% FFA reduced. However, partial glycerides was increased with presence of glycerol with 2% add in glycerol showed greater partial glycerides increment compared to 1% glycerol. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=enzymes" title="enzymes">enzymes</a>, <a href="https://publications.waset.org/abstracts/search?q=crude%20palm%20oil" title=" crude palm oil"> crude palm oil</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid" title=" free fatty acid"> free fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=glycerol" title=" glycerol"> glycerol</a> </p> <a href="https://publications.waset.org/abstracts/44575/enzymatic-remediation-in-standard-crude-palm-oil-for-superior-quality-oil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44575.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">322</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6614</span> Proximate Analysis of Muscle of Helix aspersa Living in Konya, Turkey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ozcan%20Baris%20Citil">Ozcan Baris Citil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the present study is the determination of the effects of variations in the proximate analysis, cholesterol content and fatty acid compositions of Helix aspersa. Garden snails (Helix aspersa) were picked up by hand from the Central Anatolia Region of Turkey, in autumn (November) in 2015. Fatty acid methyl esters (FAMEs) and cholesterol analysis were analyzed by gas chromatography (GC). The protein contents of snail muscle were determined with Kjeldahl distillation units. Statistical comparisons were made by using SPSS Software (version 16.0). Thirty different fatty acids of different saturation levels were detected. As the predominant fatty acids, stearic acid (C18:0), oleic acid (C18:1ω9), linoleic acid (C18:2ω6), palmitic acid (C16:0), arachidonic acid (C20:4ω6), eicosadienoic acid (C20:2) and linolenic acid (C18:3ω3) were found in Helix aspersa. Palmitic acid (C16:0) was identified as the major SFA in autumn. Linoleic acid (C18:2ω6), eicosadienoic acid (C20:2) and arachidonic acid (C20:4ω6) have the highest levels among the PUFAs. In the present study, ω3 were found 5.48% in autumn. Linolenic acid and omega-3 fatty acid amounts in the autumn decreased significantly but cholesterol content was not affected in Helix aspersa in autumn (November) in 2015. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Helix%20aspersa" title="Helix aspersa">Helix aspersa</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=SFA" title=" SFA"> SFA</a>, <a href="https://publications.waset.org/abstracts/search?q=PUFA" title=" PUFA"> PUFA</a>, <a href="https://publications.waset.org/abstracts/search?q=cholesterol" title=" cholesterol"> cholesterol</a> </p> <a href="https://publications.waset.org/abstracts/47347/proximate-analysis-of-muscle-of-helix-aspersa-living-in-konya-turkey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47347.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">338</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6613</span> Engineering Escherichia coli for Production of Short Chain Fatty Acid by Exploiting Fatty Acid Metabolic Pathway</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kamran%20Jawed">Kamran Jawed</a>, <a href="https://publications.waset.org/abstracts/search?q=Anu%20Jose%20Mattam"> Anu Jose Mattam</a>, <a href="https://publications.waset.org/abstracts/search?q=Zia%20Fatma"> Zia Fatma</a>, <a href="https://publications.waset.org/abstracts/search?q=Saima%20Wajid"> Saima Wajid</a>, <a href="https://publications.waset.org/abstracts/search?q=Malik%20Z.%20Abdin"> Malik Z. Abdin</a>, <a href="https://publications.waset.org/abstracts/search?q=Syed%20Shams%20Yazdani"> Syed Shams Yazdani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Worldwide demand of natural and sustainable fuels and chemicals have encouraged researchers to develop microbial platform for synthesis of short chain fatty acids as they are useful precursors to replace petroleum-based fuels and chemicals. In this study, we evaluated the role of fatty acid synthesis and β-oxidation cycle of Escherichia coli to produce butyric acid, a 4-carbon short chain fatty acid, with the help of three thioesterases, i.e., TesAT from Anaerococcus tetradius, TesBF from Bryantella formatexigens and TesBT from Bacteroides thetaiotaomicron. We found that E. coli strain transformed with gene for TesBT and grown in presence of 8 g/L glucose produced maximum butyric acid titer at 1.46 g/L, followed by that of TesBF at 0.85 g/L and TesAT at 0.12 g/L, indicating that these thioesterases were efficiently converting short chain fatty acyl-ACP intermediate of fatty acid synthesis pathway into the corresponding acid. The titer of butyric acid varied significantly depending upon the plasmid copy number and strain genotype. Deletion of genes for fatty acyl-CoA synthetase and acyl-CoA dehydrogenase, which are involved in initiating the fatty acid degradation cycle, and overexpression of FadR, which is a dual transcriptional regulator and exerts negative control over fatty acid degradation pathway, reduced up to 30% of butyric acid titer. This observation suggested that β-oxidation pathway is working synergistically with fatty acid synthesis pathway in production of butyric acid. Moreover, accelerating the fatty acid elongation cycle by overexpressing acetyl-CoA carboxyltransferase (Acc) and 3-hydroxy-acyl-ACP dehydratase (FabZ) or by deleting FabR, the transcription suppressor of elongation, did not improve the butyric acid titer, rather favored the long chain fatty acid production. Finally, a balance between cell growth and butyric acid production was achieved with the use of phosphorous limited growth medium and 14.3 g/L butyric acid, and 17.5 g/L total free fatty acids (FFAs) titer was achieved during fed-batch cultivation. We have engineered an E. coli strain which utilizes the intermediate of both fatty acid synthesis and degradation pathway, i.e. butyryl-ACP and -CoA, to produce butyric acid from glucose. The strategy used in this study resulted in highest reported titers of butyric acid and FFAs in engineered E. coli. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=butenoic%20acid" title="butenoic acid">butenoic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=butyric%20acid" title=" butyric acid"> butyric acid</a>, <a href="https://publications.waset.org/abstracts/search?q=Escherichia%20coli" title=" Escherichia coli"> Escherichia coli</a>, <a href="https://publications.waset.org/abstracts/search?q=fed-batch%20fermentation" title=" fed-batch fermentation"> fed-batch fermentation</a>, <a href="https://publications.waset.org/abstracts/search?q=short%20chain%20fatty%20acids" title=" short chain fatty acids"> short chain fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=thioesterase" title=" thioesterase"> thioesterase</a> </p> <a href="https://publications.waset.org/abstracts/59240/engineering-escherichia-coli-for-production-of-short-chain-fatty-acid-by-exploiting-fatty-acid-metabolic-pathway" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59240.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">371</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6612</span> Fatty Acid Profile of Meat from Lambs Fed on Diets Containing Mulberry Hay</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20G.%20Silva%20Sobrinho">A. G. Silva Sobrinho</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20G.%20A.%20Cirne"> L. G. A. Cirne</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20T.%20Santana"> V. T. Santana</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this trial was to evaluate fatty acid profile of meat from lambs fed on diets containing 0, 12.5 and 25.0% mulberry hay as a substitute for the concentrate. Twenty-four feedlot Ile de France lambs (average weight of 15kg and average age of 60 days) were randomized to receive the different diets and slaughtered at 32kg body weight. Increases were observed in the concentrations of the saturated pentadecanoic, heptadecanoic and arachidic fatty acids; of the monounsaturated nervonic fatty acid and of the polyunsaturated α-linolenic, ɣ-linolenic and eicosapentaenoic fatty acids. Increased conjugated linoleic acid (CLA) was also found in the meat of lambs fed on 12.5% mulberry hay. In addition, the omega-3 composition was augmented, while the omega-3/omega-6 ratio was decreased in mulberry hay-fed animals. In conclusion, a more desirable fatty acid profile was observed in lamb meat following the substitution of mulberry hay in the concentrate of fed, resulting in improved nutritional characteristics of the meat. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alternative%20food" title="alternative food">alternative food</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=feedlot" title=" feedlot"> feedlot</a>, <a href="https://publications.waset.org/abstracts/search?q=sheep%20meat" title=" sheep meat"> sheep meat</a> </p> <a href="https://publications.waset.org/abstracts/9723/fatty-acid-profile-of-meat-from-lambs-fed-on-diets-containing-mulberry-hay" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9723.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">465</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6611</span> Fatty Acid Composition and Therapeutic Effects of Beebread</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sibel%20Silici">Sibel Silici</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Palynological spectrum, proximate and fatty acids composition of eight beebread samples obtained from different geographical origins were determined. Beebread moisture contents varied between 11.4-15.9 %, ash 1.9-2.54 %, fat 5.9-11.5 %, and protein between 14.8-24.3 %. To our knowledge, this is the first study investigating fatty acids (FAs) composition of the selected monofloral beebreads. A total of thirty-seven FAs were identified. Of these (9Z, 12Z, 15Z)-octadeca-9, 12, 15-trienoic acid, (9Z, 12Z)-octadeca-9, 12-dienoic acid, hexadecanoic acid, (Z)-octadec-9-enoic acid, (Z)-icos-11-enoic acid and octadecanoic acid were the most abundant in all the samples. Cotton beebread contained the highest level of ω-3 FAs, 41.3 %. Unsaturated/saturated FAs ratios ranged between 1.38 and 2.39 indicating that beebread is a good source of unsaturated FAs. The pollen, proximate and FAs composition of beebread samples of different botanical and geographical origins varied significantly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bee%20bread" title="bee bread">bee bread</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid%20composition" title=" fatty acid composition"> fatty acid composition</a>, <a href="https://publications.waset.org/abstracts/search?q=proximate%20composition" title=" proximate composition"> proximate composition</a>, <a href="https://publications.waset.org/abstracts/search?q=pollen%20analysis" title=" pollen analysis"> pollen analysis</a> </p> <a href="https://publications.waset.org/abstracts/52901/fatty-acid-composition-and-therapeutic-effects-of-beebread" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52901.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">260</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6610</span> Dependence of Free Fatty Acid and Chlorophyll Content on Thermal Stability of Extra Virgin Olive Oil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yongjun%20Ahn">Yongjun Ahn</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung%20Gyu%20Choi"> Sung Gyu Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Seung-Yeop%20Kwak"> Seung-Yeop Kwak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Selective removal of free fatty acid (FFA) and chlorophyll in extra virgin olive oil (EVOO) is necessary to enhance the thermal stability in the condition of the deep frying. In this work, we demonstrated improving the thermal stability of EVOO by selective removal of free fatty acid and chlorophyll using (3-Aminopropyl)trimethoxysilane (APTMS) functionalized mesoporous silica with controlled pore size. The adsorption kinetics of free fatty acid and chlorophyll into the mesoporous silica were quantitatively analyzed by Freundlich and Langmuir model. The highest chlorophyll adsorption efficiency was shown in the pore size at 5 nm, suggesting that the interaction between the silica and the chlorophyll could be optimized at this point. The amino-functionalized mesoporous silica showed drastically improved removal efficiency of FFA than the bare silica. Moreover, beneficial compounds like tocopherol and phenolic compounds maintained even after adsorptive removal. Extra virgin olive oil treated by aminopropyl-functionalized silica had a smoke point high enough to be used as commercial frying oil. Based on these results, it is expected to attract the considerable amount of interest toward facile adsorptive refining process of EVOO using pore size controlled and amino-functionalized mesoporous silica. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mesoporous%20silica" title="mesoporous silica">mesoporous silica</a>, <a href="https://publications.waset.org/abstracts/search?q=extra%20virgin%20olive%20oil" title=" extra virgin olive oil"> extra virgin olive oil</a>, <a href="https://publications.waset.org/abstracts/search?q=selective%20adsorption" title=" selective adsorption"> selective adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20stability" title=" thermal stability"> thermal stability</a> </p> <a href="https://publications.waset.org/abstracts/96136/dependence-of-free-fatty-acid-and-chlorophyll-content-on-thermal-stability-of-extra-virgin-olive-oil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96136.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">241</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6609</span> Comparative Analysis of Oil Extracts from Cotton and Watermelon Seeds</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Jumare">S. A. Jumare</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20O.%20Tijani"> A. O. Tijani</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20F.%20Siraj"> M. F. Siraj</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20V.%20Babatunde"> B. V. Babatunde</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research investigated the comparative analysis of oil extracted from cotton and watermelon seeds using solvent extraction process. Normal ethyl-ether was used as solvent in the extraction process. The AOAC method of Analysis was employed in the determination of the physiochemical properties of the oil. The chemical properties of the oil determined include the saponification value, free fatty acid, iodine value, peroxide value and acid value. The physical properties of the oil determined include specific gravity, refractive index, colour, odour, taste and pH. The value obtained for cottonseed oil are saponification value (187mgKOH/g), free fatty acid (5.64mgKOH/g), iodine value (95.2g/100), peroxide value (9.33meq/kg), acid value (11.22mg/KOH/g), pH value (4.62), refractive index (1.46), and specific gravity (0.9) respectively, it has a bland odour, a reddish brown colour and a mild taste. The values obtained for watermelon seed oil are saponification value (83.3mgKOH/g), free fatty acid (6.58mg/KOH/g), iodine value (122.6g/100), peroxide value (5.3meq/kg), acid value (3.74mgKOH/g), pH value (6.3), refractive index (1.47), and specific gravity (0.9) respectively, it has a nutty flavour, a golden yellow colour and a mild taste. From the result obtained, it shows that cottonseed oil has high acid value which shows the stability of the oil and its stability to rancidity. Consequently, watermelon seed oil is order wise. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extraction" title="extraction">extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent" title=" solvent"> solvent</a>, <a href="https://publications.waset.org/abstracts/search?q=cotton%20seeds" title=" cotton seeds"> cotton seeds</a>, <a href="https://publications.waset.org/abstracts/search?q=watermelon%20seeds" title=" watermelon seeds"> watermelon seeds</a> </p> <a href="https://publications.waset.org/abstracts/26575/comparative-analysis-of-oil-extracts-from-cotton-and-watermelon-seeds" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26575.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">363</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6608</span> Fatty Acid Composition of Muscle Lipids of Cyprinus carpio L. Living in Different Dam Lake, Turkey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20B.%20Citil">O. B. Citil</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Sariyel"> V. Sariyel</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Akoz"> M. Akoz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, total fatty acid composition of muscle lipids of Cyprinus carpio L. living in Suğla Dam Lake, Altinapa Dam Lake, Eğirdir Lake and Burdur Lake were determined using GC. During this study, for the summer season of July was taken from each region of the land and they were stored in deep-freeze set to -20 degrees until the analysis date. At the end of the analyses, 30 different fatty acids were found in the composition of Cyprinus carpio L. which lives in different lakes. Cyprinus carpio Suğla Dam Lake of polyunsaturated fatty acids (PUFAs), were higher than other lakes. Cyprinus carpio L. was the highest in the major SFA palmitic acid. Polyunsaturated fatty acids (PUFA) of carp, the most abundant fish species in all lakes, were found to be higher than those of saturated fatty acids (SFA) in all lakes. Palmitic acid was the major SFA in all lakes. Oleic acid was identified as the major MUFA. Docosahexaenoic acid (DHA) was the most abundant in all lakes. ω3 fatty acid composition was higher than the percentage of the percentage ω6 fatty acids in all lake. ω3/ω6 rates of Cyprinus carpio L. Suğla Dam Lake, Altinapa Dam Lake, Eğirdir Lake and Burdur Lake, 2.12, 1.19, 2.15, 2.87, and 2.82, respectively. Docosahexaenoic acid (DHA) was the major PUFA in Eğirdir and Burdur lakes, whereas linoleic acid (LA) was the major PUFA in Altinapa and Suğla Dam Lakes. It was shown that the fatty acid composition in the muscle of carp was significantly influenced by different lakes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cyprinus%20carpio%20L." title="Cyprinus carpio L.">Cyprinus carpio L.</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=composition" title=" composition"> composition</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20chromatography" title=" gas chromatography"> gas chromatography</a> </p> <a href="https://publications.waset.org/abstracts/26055/fatty-acid-composition-of-muscle-lipids-of-cyprinus-carpio-l-living-in-different-dam-lake-turkey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26055.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">570</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6607</span> Synergistic Effect of Cold Plasma on Antioxidant Properties and Fatty Acid Composition of Rice Bran</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rohit%20Thirumdas">Rohit Thirumdas</a>, <a href="https://publications.waset.org/abstracts/search?q=Annapure%20U.%20S."> Annapure U. S.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Low-pressure air plasma is used to investigate the antioxidant properties and fatty acid composition of rice bran at different power levels (40 W and 60 W). We observed partial hydrogenation of rice bran oil after the treatment. The fatty acid composition analysis by gas chromatography showed an increase of 28.2% in palmitic acid and a 29.4% decrease in linoleic acid. FTIR spectrum shows no new peak formation, which confirms negligible amounts of trans-fatty acids. There is a decrease in peroxide value and iodine value, which can be correlated to an increase in saturated fatty acids. The total polyphenolic content was observed to be increased by 20.1% after the treatment. There is an increase in reducing power and DPPH % inhibition of rice bran due to plasma treatment. This study shows cold plasma treatment can be considered an alternative technology for the hydrogenation of oils, replacing traditional toxic processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20plasma" title="cold plasma">cold plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20bran" title=" rice bran"> rice bran</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid%20composition" title=" fatty acid composition"> fatty acid composition</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogenation%20of%20oils" title=" hydrogenation of oils"> hydrogenation of oils</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20properties" title=" antioxidant properties"> antioxidant properties</a> </p> <a href="https://publications.waset.org/abstracts/155547/synergistic-effect-of-cold-plasma-on-antioxidant-properties-and-fatty-acid-composition-of-rice-bran" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155547.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">140</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6606</span> Determination of Myocardial Function Using Heart Accumulated Radiopharmaceuticals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20C%20.D.%20Kulathilake">C. C .D. Kulathilake</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Jayatilake"> M. Jayatilake</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Takahashi"> T. Takahashi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The myocardium is composed of specialized muscle which relies mainly on fatty acid and sugar metabolism and it is widely contribute to the heart functioning. The changes of the cardiac energy-producing system during heart failure have been proved using autoradiography techniques. This study focused on evaluating sugar and fatty acid metabolism in myocardium as cardiac energy getting system using heart-accumulated radiopharmaceuticals. Two sets of autoradiographs of heart cross sections of Lewis male rats were analyzed and the time- accumulation curve obtained with use of the MATLAB image processing software to evaluate fatty acid and sugar metabolic functions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autoradiographs" title="autoradiographs">autoradiographs</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title=" fatty acid"> fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=radiopharmaceuticals" title=" radiopharmaceuticals"> radiopharmaceuticals</a>, <a href="https://publications.waset.org/abstracts/search?q=sugar" title=" sugar"> sugar</a> </p> <a href="https://publications.waset.org/abstracts/33660/determination-of-myocardial-function-using-heart-accumulated-radiopharmaceuticals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33660.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">450</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6605</span> Anti-Acanthamoeba Activities of Fatty Acid Salts and Fatty Acids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Manami%20Masuda">Manami Masuda</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariko%20Era"> Mariko Era</a>, <a href="https://publications.waset.org/abstracts/search?q=Takayoshi%20Kawahara"> Takayoshi Kawahara</a>, <a href="https://publications.waset.org/abstracts/search?q=Takahide%20Kanyama"> Takahide Kanyama</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Morita"> Hiroshi Morita</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: Fatty acid salts are a type of anionic surfactant and are produced from fatty acids and alkali. Moreover, fatty acid salts are known to have potent antibacterial activities. Acanthamoeba is ubiquitously distributed in the environment including sea water, fresh water, soil and even from the air. Although generally free-living, Acanthamoeba can be an opportunistic pathogen, which could cause a potentially blinding corneal infection known as Acanthamoeba keratitis. So, in this study, we evaluated the anti-amoeba activity of fatty acid salts and fatty acids to Acanthamoeba castellanii ATCC 30010. Materials and Methods: The antibacterial activity of 9 fatty acid salts (potassium butyrate (C4K), caproate (C6K), caprylate (C8K), caprate (C10K), laurate (C12K), myristate (C14K), oleate (C18:1K), linoleate (C18:2K), linolenate (C18:3K)) tested on cells of Acanthamoeba castellanii ATCC 30010. Fatty acid salts (concentration of 175 mM and pH 10.5) were prepared by mixing the fatty acid with the appropriate amount of KOH. The amoeba suspension mixed with KOH with a pH adjusted solution was used as the control. Fatty acids (concentration of 175 mM) were prepared by mixing the fatty acid with Tween 80 (20 %). The amoeba suspension mixed with Tween 80 (20 %) was used as the control. The anti-amoeba method, the amoeba suspension (3.0 × 104 cells/ml trophozoites) was mixed with the sample of fatty acid potassium (final concentration of 175 mM). Samples were incubated at 30°C, for 10 min, 60 min, and 180 min and then the viability of A. castellanii was evaluated using plankton counting chamber and trypan blue stainings. The minimum inhibitory concentration (MIC) against Acanthamoeba was determined using the two-fold dilution method. The MIC was defined as the minimal anti-amoeba concentration that inhibited visible amoeba growth following incubation (180 min). Results: C8K, C10K, and C12K were the anti-amoeba effect of 4 log-unit (99.99 % growth suppression of A. castellanii) incubated time for 180 min against A. castellanii at 175mM. After the amoeba, the suspension was mixed with C10K or C12K, destroying the cell membrane had been observed. Whereas, the pH adjusted control solution did not exhibit any effect even after 180 min of incubation with A. castellanii. Moreover, C6, C8, and C18:3 were the anti-amoeba effect of 4 log-unit incubated time for 60 min. C4 and C18:2 exhibited a 4-log reduction after 180 min incubation. Furthermore, the minimum inhibitory concentration (MIC) was determined. The MIC of C10K, C12K and C4 were 2.7 mM. These results indicate that C10K, C12K and C4 have high anti-amoeba activity against A. castellanii and suggest C10K, C12K and C4 have great potential for antimi-amoeba agents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatty%20acid%20salts" title="Fatty acid salts">Fatty acid salts</a>, <a href="https://publications.waset.org/abstracts/search?q=anti-amoeba%20activities" title=" anti-amoeba activities"> anti-amoeba activities</a>, <a href="https://publications.waset.org/abstracts/search?q=Acanthamoeba" title=" Acanthamoeba"> Acanthamoeba</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a> </p> <a href="https://publications.waset.org/abstracts/33499/anti-acanthamoeba-activities-of-fatty-acid-salts-and-fatty-acids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33499.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">479</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6604</span> Decarboxylation of Waste Coconut Oil and Comparison of Acid Values</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pabasara%20H.%20Gamage">Pabasara H. Gamage</a>, <a href="https://publications.waset.org/abstracts/search?q=Sisira%20K.%20Weliwegamage"> Sisira K. Weliwegamage</a>, <a href="https://publications.waset.org/abstracts/search?q=Sameera%20R.%20Gunatilake"> Sameera R. Gunatilake</a>, <a href="https://publications.waset.org/abstracts/search?q=Hondamuni%20I.%20C%20De%20Silva"> Hondamuni I. C De Silva</a>, <a href="https://publications.waset.org/abstracts/search?q=Parakrama%20Karunaratne"> Parakrama Karunaratne</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Green diesel is an upcoming category of biofuels, which has more practical advantages than biodiesel. Production of green diesel involves production of hydrocarbons from various fatty acid sources. Though green diesel is chemically similar to fossil fuel hydrocarbons, it is more environmentally friendly. Decarboxylation of fatty acid sources is one of green diesel production methods and is less expensive and more energy efficient compared to hydrodeoxygenation. Free fatty acids (FFA), undergo decarboxylation readily than triglycerides. Waste coconut oil, which is a rich source of FFA, can be easily decarboxylated than other oils which have lower FFA contents. These free fatty acids can be converted to hydrocarbons by decarboxylation. Experiments were conducted to carry out decarboxylation of waste coconut oil in a high pressure hastealloy reactor (Toption Goup LTD), in the presence of soda lime and mixtures of soda lime and alumina. Acid value (AV) correlates to the amount of FFA available in a sample of oil. It can be shown that with the decreasing of AV, FFAs have converted to hydrocarbons. First, waste coconut oil was reacted with soda lime alone, at 150 °C, 200 °C, and 250 °C and 1.2 MPa pressure for 2 hours. AVs of products at different temperatures were compared. AV of products decreased with increasing temperature. Thereafter, different mixtures of soda lime and alumina (100% Soda lime, 1:1 soda lime and alumina and 100% alumina) were employed at temperatures 150 °C, 200 °C, and 250 °C and 1.2 MPa pressure. The lowest AV of 2.99±0.03 was obtained when 1:1 soda lime and alumina were employed at 250 °C. It can be concluded with respect to the AV that the amount of FFA decreased when decarboxylation temperature was increased. Soda lime:alumina 1:1 mixture showed the lowest AV among the compositions studied. These findings lead to formulate a method to successfully synthesize hydrocarbons by decarboxylating waste coconut oil in the presence of soda lime and alumina (1:1) at elevated tempertaures such as 250 °C. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acid%20value" title="acid value">acid value</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acids" title=" free fatty acids"> free fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20diesel" title=" green diesel"> green diesel</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20pressure%20reactor" title=" high pressure reactor"> high pressure reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20coconut%20oil" title=" waste coconut oil"> waste coconut oil</a> </p> <a href="https://publications.waset.org/abstracts/41339/decarboxylation-of-waste-coconut-oil-and-comparison-of-acid-values" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/41339.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">300</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6603</span> Preparation of Ni, Mg, and Fe Ions Doped Carbon-Based Catalyst with Ordered Mesoporous Configuration for Catalyzing the Production of Green Diesel from Fatty Acid and Waste Cooking Oil</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ya-Ting%20Liao">Ya-Ting Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Chien-Chang%20Huang"> Chien-Chang Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Green diesel is a renewable biofuel obtained from plant oil or fatty acid deoxygenation. Because the molecular structure of green diesel is similar to that of fossil fuel, green diesel can be directly used in present vehicle engines without blending with fossil fuel. In this study, mesoporous carbon-based catalysts with doped metal ions, such as Mg, Ni, or Fe, were prepared using co-polymers and gallic acid as molecular templates and carbon sources, respectively. The prepared catalysts were then applied to carry out the deoxygenation of fatty acid and waste cooking oil. To obtain the highest net energy from the produced green diesel, the catalyzed deoxygenation reaction and catalyst preparation processes were carried out under ambient conditions, respectively, to avoid using H₂ as a reagent and reducing agent. XRD, BET, SEM, EDS, FT-IR, and pyridine-IR characterized the composition and configuration of the prepared catalyst. The results display that the doped metal ions were well-dispersed in the carbon-based catalyst and the surface of the catalysts was rich in Lewis acid sites after the catalysts were calcined at the proper temperature. The pore size present on the catalyst was 9-11 nm. To catalyze the deoxygenation of fatty acid by the prepared catalysts at 320℃ under H₂-free conditions, high fatty acid conversion (99%) and high selectivity for hydrocarbons (78%) were obtained when the ratio of doped Ni to doped Mg was optimized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ordered%20mesoporous%20carbon" title="ordered mesoporous carbon">ordered mesoporous carbon</a>, <a href="https://publications.waset.org/abstracts/search?q=catalysts" title=" catalysts"> catalysts</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrocarbons" title=" hydrocarbons"> hydrocarbons</a>, <a href="https://publications.waset.org/abstracts/search?q=deoxygenation" title=" deoxygenation"> deoxygenation</a> </p> <a href="https://publications.waset.org/abstracts/161160/preparation-of-ni-mg-and-fe-ions-doped-carbon-based-catalyst-with-ordered-mesoporous-configuration-for-catalyzing-the-production-of-green-diesel-from-fatty-acid-and-waste-cooking-oil" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161160.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">79</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6602</span> Characterization of Fatty Acid Glucose Esters as Os9BGlu31 Transglucosidase Substrates in Rice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juthamath%20Komvongsa">Juthamath Komvongsa</a>, <a href="https://publications.waset.org/abstracts/search?q=Bancha%20Mahong"> Bancha Mahong</a>, <a href="https://publications.waset.org/abstracts/search?q=Kannika%20Phasai"> Kannika Phasai</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukanya%20Luang"> Sukanya Luang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong-Seong%20Jeon"> Jong-Seong Jeon</a>, <a href="https://publications.waset.org/abstracts/search?q=James%20Ketudat-Cairns"> James Ketudat-Cairns</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Os9BGlu31 is a rice transglucosidase that transfers glucosyl moieties to various acceptors such as carboxylic acids and alcohols, including phenolic acids and flavonoids, in vitro. The role of Os9BGlu31 transglucosidase in rice plant metabolism has not been reported to date. Methanolic extracts of rice bran and flag leaves were found to contain substrates to which Os9BGlu31 could transfer glucose from 4-nitrophenyl β -D-glucopyranoside donor. The semi-purified substrate from rice bran was found to contain oleic acid and linoleic acid and the pure fatty acids were found to act as acceptor substrates for Os9BGlu31 transglucosidase to form 1-O-acyl glucose esters. Os9BGlu31 showed higher activity with oleic acid (18:1) and linoleic acid (18:2) than stearic acid (18:0), and had both higher kcat and higher Km for linoleic than oleic acid in the presence of 8 mM 4NPGlc donor. This transglucosidase reaction is reversible, Os9bglu31 knockout rice lines of flag leaves were found to have higher amounts of fatty acid glucose esters than wild type control lines, these data conclude that fatty acid glucose esters act as glucosyl donor substrates for Os9BGlu31 transglucosidase in rice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid" title="fatty acid">fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid%20glucose%20ester" title=" fatty acid glucose ester"> fatty acid glucose ester</a>, <a href="https://publications.waset.org/abstracts/search?q=transglucosidase" title=" transglucosidase"> transglucosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=rice%20flag%20leaf" title=" rice flag leaf"> rice flag leaf</a>, <a href="https://publications.waset.org/abstracts/search?q=homologous%20knockout%20lines" title=" homologous knockout lines"> homologous knockout lines</a>, <a href="https://publications.waset.org/abstracts/search?q=tandam%20mass%20spectrometry" title=" tandam mass spectrometry"> tandam mass spectrometry</a> </p> <a href="https://publications.waset.org/abstracts/42160/characterization-of-fatty-acid-glucose-esters-as-os9bglu31-transglucosidase-substrates-in-rice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42160.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6601</span> Esterification Reaction of Stearic Acid with Methanol Over Surface Functionalised PAN Fibrous Solid Acid Catalyst</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rawaz%20A.%20Ahmed">Rawaz A. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Katherine%20Huddersman"> Katherine Huddersman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High-lipid Fats, Oils and Grease (FOGs) from wastewater are underutilized despite their potential for conversion into valuable fuels; this work describes a surface-functionalized fibrous Polyacrylonitrile (PAN) mesh as a novel heterogeneous acid catalyst for the conversion of free fatty acids (FFAs), via a catalytic esterification process into biodiesel. The esterification of stearic acid (SA) with methanol was studied over an acidified PAN solid acid catalyst. Disappearance of the carboxylic acid (C=O) peak of the stearic acid at 1696 cm-1 in the FT-IR spectrum with the associated appearance of the ester (C=O) peak at 1739 cm-1 confirmed the production of the methyl stearate. This was further supported by 1H NMR spectra with the appearance of the ester (-CH₂OCOR) at 3.60-3.70 ppm. Quantitate analysis by GC-FID showed the catalyst has excellent activity with >95 % yield of methyl stearate (MS) at 90 ◦C after 3 h and a molar ratio of methanol to SA of 35:1. To date, to our best knowledge, there is no research in the literature on the esterification reaction for biodiesel production using a modified PAN mesh as a catalyst. It is noteworthy that this acidified PAN mesh catalyst showed comparable activity to conventional Brönsted acids, namely H₂SO₄ and p-TSA, as well as exhibiting higher activity than various other heterogeneous catalysts such as zeolites, ion-exchange resins and acid clay. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fats%20oil%20and%20greases%20%28FOGs%29" title="fats oil and greases (FOGs)">fats oil and greases (FOGs)</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid" title=" free fatty acid"> free fatty acid</a>, <a href="https://publications.waset.org/abstracts/search?q=esterification%20reaction" title=" esterification reaction"> esterification reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=methyl%20ester" title=" methyl ester"> methyl ester</a>, <a href="https://publications.waset.org/abstracts/search?q=PAN" title=" PAN"> PAN</a> </p> <a href="https://publications.waset.org/abstracts/148009/esterification-reaction-of-stearic-acid-with-methanol-over-surface-functionalised-pan-fibrous-solid-acid-catalyst" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148009.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">243</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6600</span> The Effects of Extraction Methods on Fat Content and Fatty Acid Profiles of Marine Fish Species</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yesim%20%C3%96zogul">Yesim Özogul</a>, <a href="https://publications.waset.org/abstracts/search?q=Fethiye%20Takada%C5%9F"> Fethiye Takadaş</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Durmus"> Mustafa Durmus</a>, <a href="https://publications.waset.org/abstracts/search?q=Y%C4%B1lmaz%20Ucar"> Yılmaz Ucar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20R%C4%B1za%20K%C3%B6%C5%9Fker"> Ali Rıza Köşker</a>, <a href="https://publications.waset.org/abstracts/search?q=Gulsun%20%C3%96zyurt"> Gulsun Özyurt</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatih%20%C3%96zogul"> Fatih Özogul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It has been well documented that polyunsaturated fatty acids (PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have beneficial effects on health, regarding prevention of cardiovascular diseases, cancer and autoimmune disorders, development the brain and retina and treatment of major depressive disorder etc. Thus, an adequate intake of omega PUFA is essential and generally marine fish are the richest sources of PUFA in human diet. Thus, this study was conducted to evaluate the efficiency of different extraction methods (Bligh and Dyer, soxhlet, microwave and ultrasonics) on the fat content and fatty acid profiles of marine fish species (Mullus babatus, Upeneus moluccensis, Mullus surmuletus, Anguilla anguilla, Pagellus erythrinus and Saurida undosquamis). Fish species were caught by trawl in Mediterranean Sea and immediately iced. After that, fish were transported to laboratory in ice and stored at -18oC in a freezer until the day of analyses. After extracting lipid from fish by different methods, lipid samples were converted to their constituent fatty acid methyl esters. The fatty acid composition was analysed by a GC Clarus 500 with an autosampler (Perkin Elmer, Shelton, CT, USA) equipped with a flame ionization detector and a fused silica capillary SGE column (30 m x 0.32 mm ID x 0.25 mm BP20 0.25 UM, USA). The results showed that there were significant differences (P < 0.05) in fatty acids of all species and also extraction methods affected fat contents and fatty acid profiles of fish species. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extraction%20methods" title="extraction methods">extraction methods</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=marine%20fish" title=" marine fish"> marine fish</a>, <a href="https://publications.waset.org/abstracts/search?q=PUFA" title=" PUFA"> PUFA</a> </p> <a href="https://publications.waset.org/abstracts/72687/the-effects-of-extraction-methods-on-fat-content-and-fatty-acid-profiles-of-marine-fish-species" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72687.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">267</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6599</span> Two Step Biodiesel Production from High Free Fatty Acid Spent Bleaching Earth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rajiv%20Arora">Rajiv Arora</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biodiesel may be economical if produced from inexpensive feedstock which commonly contains high level of free fatty acids (FFA) as an inhibitor in production of methyl ester. In this study, a two-step process for biodiesel production from high FFA spent bleach earth oil in a batch reactor is developed. Oil sample extracted from spent bleaching earth (SBE) was utilized for biodiesel process. In the first step, FFA of the SBE oil was reduced to 1.91% through sulfuric acid catalyzed esterification. In the second step, the product prepared from the first esterification process was carried out transesterification with an alkaline catalyst. The influence of four variables on conversion efficiency to methyl ester, i.e., methanol/ SBE oil molar ratio, catalyst amount, reaction temperature and reaction time, was studied in the second stage. The optimum process variables in the transesterification were methanol/oil molar ratio 6:1, heterogeneous catalyst conc. 5 wt %, reaction temperature 65 °C and reaction time 60 minutes to produce biodiesel. Major fuel properties of SBE biodiesel were measured to comply with ASTM and EN standards. Therefore, an optimized process for production of biodiesel from a low-cost high FFA source was accomplished. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiesel" title="biodiesel">biodiesel</a>, <a href="https://publications.waset.org/abstracts/search?q=esterification" title=" esterification"> esterification</a>, <a href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acids" title=" free fatty acids"> free fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20oil" title=" residual oil"> residual oil</a>, <a href="https://publications.waset.org/abstracts/search?q=spent%20bleaching%20earth" title=" spent bleaching earth"> spent bleaching earth</a>, <a href="https://publications.waset.org/abstracts/search?q=transesterification" title=" transesterification"> transesterification</a> </p> <a href="https://publications.waset.org/abstracts/85852/two-step-biodiesel-production-from-high-free-fatty-acid-spent-bleaching-earth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85852.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">176</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6598</span> Identification of Lipo-Alkaloids and Fatty Acids in Aconitum carmichaelii Using Liquid Chromatography–Mass Spectrometry and Gas Chromatography–Mass Spectrometry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ying%20Liang">Ying Liang</a>, <a href="https://publications.waset.org/abstracts/search?q=Na%20Li"> Na Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Lipo-alkaloid is a kind of C19-norditerpenoid alkaloids existed in Aconitum species, which usually contains an aconitane skeleton and one or two fatty acid residues. The structures are very similar to that of diester-type alkaloids, which are considered as the main bioactive components in Aconitum carmichaelii. They have anti-inflammatory, anti-nociceptive, and anti-proliferative activities. So far, more than 200 lipo-alkaloids were reported from plants, semisynthesis, and biotransformations. In our research, by the combination of ultra-high performance liquid chromatography-quadruple-time of flight mass spectrometry (UHPLC-Q-TOF-MS) and an in-house database, 148 lipo-alkaloids were identified from A. carmichaelii, including 93 potential new compounds and 38 compounds with oxygenated fatty acid moieties. To our knowledge, this is the first time of the reporting of the oxygenated fatty acids as the side chains in naturally-occurring lipo-alkaloids. Considering the fatty acid residues in lipo-alkaloids should come from the free acids in the plant, the fatty acids and their relationship with lipo-alkaloids were further investigated by GC-MS and LC-MS. Among 17 fatty acids identified by GC-MS, 12 were detected as the side chains of lipo-alkaloids, which accounted for about 1/3 of total lipo-alkaloids, while these fatty acid residues were less than 1/4 of total fatty acid residues. And, total of 37 fatty acids were determined by UHPCL-Q-TOF-MS, including 18 oxidized fatty acids firstly identified from A. carmichaelii. These fatty acids were observed as the side chains of lipo-alkaloids. In addition, although over 140 lipo-alkaloids were identified, six lipo-alkaloids, 8-O-linoleoyl-14-benzoylmesaconine (1), 8-O-linoleoyl-14-benzoylaconine (2), 8-O-palmitoyl-14-benzoylmesaconine (3), 8-O-oleoyl-14-benzoylmesaconine (4), 8-O-pal-benzoylaconine (5), and 8-O-ole-Benzoylaconine (6), were found to be the main components, which accounted for over 90% content of total lipo-alkaloids. Therefore, using these six components as standards, a UHPLC-Triple Quadrupole-MS (UHPLC-QQQ-MS) approach was established to investigate the influence of processing on the contents of lipo-alkaloids. Although it was commonly supposed that the contents of lipo-alkaloids increased after processing, our research showed that no significant change was observed before and after processing. Using the same methods, the lipo-alkaloids in the lateral roots of A. carmichaelii and the roots of A. kusnezoffii were determined and quantified. The contents of lipo-alkaloids in A. kusnezoffii were close to that of the parent roots of A. carmichaelii, while the lateral roots had less lipo-alkaloids than the parent roots. This work was supported by Macao Science and Technology Development Fund (086/2013/A3 and 003/2016/A1). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aconitum%20carmichaelii" title="Aconitum carmichaelii">Aconitum carmichaelii</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=GC-MS" title=" GC-MS"> GC-MS</a>, <a href="https://publications.waset.org/abstracts/search?q=LC-MS" title=" LC-MS"> LC-MS</a>, <a href="https://publications.waset.org/abstracts/search?q=lipo-alkaloids" title=" lipo-alkaloids"> lipo-alkaloids</a> </p> <a href="https://publications.waset.org/abstracts/68569/identification-of-lipo-alkaloids-and-fatty-acids-in-aconitum-carmichaelii-using-liquid-chromatography-mass-spectrometry-and-gas-chromatography-mass-spectrometry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68569.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">299</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6597</span> Assisted Supercritical Carbon Dioxide Extraction of Tocotrienols from Palm Fatty Acid Distillate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Najwa%20Othman">Najwa Othman</a>, <a href="https://publications.waset.org/abstracts/search?q=Norhidayah%20Suleiman"> Norhidayah Suleiman</a>, <a href="https://publications.waset.org/abstracts/search?q=Gun%20Hean%20Chong"> Gun Hean Chong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Palm fatty acid distillate (PFAD) is a by-product of palm oil refineries which contains valuable compounds such as phytosterols, squalene, polycosanol, co-enzyme Q10 and vitamin E (tocopherols and tocotrienols). Approximately 0.7-1.0% of vitamin E accumulates in PFAD, and it functions as antioxidants and anti-inflammatory. The objective of this research is to evaluate the effect of manipulated variables in supercritical carbon dioxide towards the recovery of tocotrienols in PFAD. The vitamin E concentrate isolated varies depending on the pre-treatment of sample and extraction techniques. In this research, tocotrienols in PFAD was concentrated by removing the extraneous matters, especially free fatty acid (FFA) and acylglycerols. Pre-treatment method such as enzymatic hydrolysis by using lipase from Candida rugosa as an enzyme was used to remove FFA and improve recovery of vitamin E. After that, treated PFAD was extracted by using supercritical fluid extraction in co-current glass beads packed column (22 cm x 75 cm i.d) at different temperatures (40-60°C) and pressures (100-300 bar) for 5 hours. After the extraction, the sample was analyzed by using high-pressure liquid chromatography (HPLC) system to quantify the tocotrienols. The results indicated that a combined pressure (200 bar) and temperature (60°C) was predicted to provide highest tocotrienols yield and the extraction yield obtained was 106.45%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=enzymatic%20hydrolysis" title="enzymatic hydrolysis">enzymatic hydrolysis</a>, <a href="https://publications.waset.org/abstracts/search?q=palm%20fatty%20acid%20distillate" title=" palm fatty acid distillate"> palm fatty acid distillate</a>, <a href="https://publications.waset.org/abstracts/search?q=supercritical%20fluid%20extraction" title=" supercritical fluid extraction"> supercritical fluid extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=tocotrienols" title=" tocotrienols "> tocotrienols </a> </p> <a href="https://publications.waset.org/abstracts/104869/assisted-supercritical-carbon-dioxide-extraction-of-tocotrienols-from-palm-fatty-acid-distillate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104869.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">135</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6596</span> Influence of Culture Conditions on the Growth and Fatty Acid Composition of Green Microalgae Oocystis rhomboideus, Scenedesmus obliquus, Dictyochlorella globosa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tatyana%20A.%20Karpenyuk">Tatyana A. Karpenyuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Saltanat%20B.%20Orazova"> Saltanat B. Orazova</a>, <a href="https://publications.waset.org/abstracts/search?q=Yana%20S.%20Tzurkan"> Yana S. Tzurkan</a>, <a href="https://publications.waset.org/abstracts/search?q=Alla%20V.%20Goncharova"> Alla V. Goncharova</a>, <a href="https://publications.waset.org/abstracts/search?q=Bakytzhan%20K.%20Kairat"> Bakytzhan K. Kairat</a>, <a href="https://publications.waset.org/abstracts/search?q=Togzhan%20D.%20Mukasheva"> Togzhan D. Mukasheva</a>, <a href="https://publications.waset.org/abstracts/search?q=Ludmila%20V.%20Ignatova"> Ludmila V. Ignatova</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramza%20Z.%20Berzhanova"> Ramza Z. Berzhanova</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microalgae due to the ability to accumulate high levels of practically valuable polyunsaturated fatty acids attract attention as a promising raw material for commercial products. It were defined the features of the growth processes of cells green protococcal microalgae Oocystis rhomboideus, Scenedesmus obliquus, Dictyochlorella globosa at cultivation in different nutritional mediums. For the rapid accumulation of biomass, combined with high productivity of total lipids fraction yield recommended to use the Fitzgerald medium (Scenodesmus obliquus, Oocystis rhomboideus) and/or Bold medium (Dictyochlorella globosa). Productivity of lipids decreased in sequence Dictyochlorella globosa > Scenodesmus obliquus > Oocystis rhomboideus. The bulk of fatty acids fraction of the total lipids is unsaturated fatty acids, which accounts for 70 to 83% of the total number of fatty acids. The share of monoenic acids varies from 16 to 36 %, the share of unsaturated fatty acids - from 44 to 65% of total fatty acids fraction. Among the unsaturated acids dominate α-linolenic acid (C18:3n-3), hexadecatetraenic acid (C16:4) and linoleic acid (C18:2). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=microalgae" title="microalgae">microalgae</a>, <a href="https://publications.waset.org/abstracts/search?q=lipids" title=" lipids"> lipids</a>, <a href="https://publications.waset.org/abstracts/search?q=fatty%20acids" title=" fatty acids"> fatty acids</a>, <a href="https://publications.waset.org/abstracts/search?q=culture%20conditions" title=" culture conditions"> culture conditions</a> </p> <a href="https://publications.waset.org/abstracts/10149/influence-of-culture-conditions-on-the-growth-and-fatty-acid-composition-of-green-microalgae-oocystis-rhomboideus-scenedesmus-obliquus-dictyochlorella-globosa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10149.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">451</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6595</span> Fatty Acid Composition, Total Sugar Content and Anti-Diabetic Activity of Methanol and Water Extracts of Nine Different Fruit Tree Leaves Collected from Mediterranean Region of Turkey</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sengul%20Uysal">Sengul Uysal</a>, <a href="https://publications.waset.org/abstracts/search?q=Gokhan%20Zengin"> Gokhan Zengin</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdurrahman%20Aktumsek"> Abdurrahman Aktumsek</a>, <a href="https://publications.waset.org/abstracts/search?q=Sukru%20Karatas"> Sukru Karatas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, we determined the total sugar content, fatty acid compositions and α-amylase and α-glucosidase inhibitory activity of methanolic and water extracts of nine different fruit tree leaves. α-amylase and α-glycosidase inhibitory activity were determined by using Caraway-Somogyi–iodine/potassium iodide (IKI) and 4-nitrophenyl-α-D-glucopyranoside (PNPG) as substrate, respectively. Total sugar content of the nine different fruit tree leaves varies from 281.02 mg GE/g (glucose equivalents) to 643.96 mg GE/g. Methanolic extract from avocado leaves had the strongest in α-amylase and α-glucosidase inhibitory activity, 69.21% and 96.26 %, respectively. Fatty acid composition of nine fruit tree leaves was characterized by GC (gas chromatography) and twenty-four components were identified. Among the tested fruit tree leaves, the main component was linolenic acid (49.09%). The level of essential fatty acids are over 50% in mulberry, grape and loquat leaves. PUFAs (polyunsaturated fatty acids) were major group of fatty acids present in oils of mulberry, fig, pomegranate, grape, and loquat leaves. Therefore, these oils can be considered as a good source of polyunsaturated fatty acids. Furthermore, avocado can be regarded as a new source for diabetic therapies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fatty%20acid%20compositions" title="fatty acid compositions">fatty acid compositions</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20sugar%20contents" title=" total sugar contents"> total sugar contents</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-amylase" title=" α-amylase"> α-amylase</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-glucosidase" title=" α-glucosidase"> α-glucosidase</a>, <a href="https://publications.waset.org/abstracts/search?q=fruit%20tree%20leaves" title=" fruit tree leaves"> fruit tree leaves</a>, <a href="https://publications.waset.org/abstracts/search?q=Turkey" title=" Turkey"> Turkey</a> </p> <a href="https://publications.waset.org/abstracts/19405/fatty-acid-composition-total-sugar-content-and-anti-diabetic-activity-of-methanol-and-water-extracts-of-nine-different-fruit-tree-leaves-collected-from-mediterranean-region-of-turkey" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19405.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">486</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=free%20fatty%20acid&page=3">3</a></li> <li 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