Application of Refractometric Methodology for Simultaneous Determination of Alcohol and Residual Sugar Concentrations during Alcoholic Fermentation Bioprocess of Date Juice

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Methodology for Simultaneous Determination of Alcohol and Residual Sugar Concentrations during Alcoholic Fermentation Bioprocess of Date Juice</title> <meta name="description" content="Application of Refractometric Methodology for Simultaneous Determination of Alcohol and Residual Sugar Concentrations during Alcoholic Fermentation Bioprocess of Date Juice"> <meta name="keywords" content="alcoholic fermentation, date juice, refractometry, residual sugar"> <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> 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<div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 87358</div> </div> </div> </div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">Application of Refractometric Methodology for Simultaneous Determination of Alcohol and Residual Sugar Concentrations during Alcoholic Fermentation Bioprocess of Date Juice</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Boukhiar%20Aissa">Boukhiar Aissa</a>, <a href="https://publications.waset.org/abstracts/search?q=Halladj%20Fatima"> Halladj Fatima</a>, <a href="https://publications.waset.org/abstracts/search?q=Iguergaziz%20Nadia"> Iguergaziz Nadia</a>, <a href="https://publications.waset.org/abstracts/search?q=Lamrani%20yasmina"> Lamrani yasmina</a>, <a href="https://publications.waset.org/abstracts/search?q=Benamara%20Salem"> Benamara Salem</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Determining the alcohol content in alcoholic fermentation bioprocess is of great importance. In fact, it is a key indicator for monitoring this bioprocess. Several methodologies (chemical, spectrophotometric, chromatographic) are used to the determination of this parameter. However, these techniques are very long and they require: rigorous preparations, sometimes dangerous chemical reagents and/or expensive equipment. In the present study, the date juice is used as the substrate of alcoholic fermentation. The extracted juice undergoes an alcoholic fermentation by Saccharomyces cerevisiae. The study of the possible use of refractometry as a sole means for the in situ control of alcoholic fermentation revealed a good correlation (R2=0.98) between initial and final 掳Brix: 掳Brixf=0.377脳掳Brixi. In addition, the relationship between 螖掳Brix and alcoholic content of the final product (A,%) has been determined: 螖掳Brix/A=1.1. The obtained results allowed us to establish iso-responses abacus, which can be used for the determination of alcohol and residual sugar content, with a mean relative error (MRE) of 5.35%. <iframe src="https://publications.waset.org/abstracts/2808.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alcoholic%20fermentation" title="alcoholic fermentation">alcoholic fermentation</a>, <a href="https://publications.waset.org/abstracts/search?q=date%20juice" title=" date juice"> date juice</a>, <a href="https://publications.waset.org/abstracts/search?q=refractometry" title=" refractometry"> refractometry</a>, <a href="https://publications.waset.org/abstracts/search?q=residual%20sugar" title=" residual sugar"> residual sugar</a> </p> <a href="https://publications.waset.org/abstracts/2808/application-of-refractometric-methodology-for-simultaneous-determination-of-alcohol-and-residual-sugar-concentrations-during-alcoholic-fermentation-bioprocess-of-date-juice" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2808.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">341</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" 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Application of Refractometric Methodology for Simultaneous Determination of Alcohol and Residual Sugar Concentrations during Alcoholic Fermentation Bioprocess of Date Juice