TY - JFULL AU - Ratchadaporn Oonsivilai and Jutarat Manatwiyangkool and Anant Oonsivilai PY - 2011/1/ TI - Extraction Condition of Phaseolus vulgaris T2 - International Journal of Nutrition and Food Engineering SP - 868 EP - 872 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/12915 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 60, 2011 N2 - Theoptimal extraction condition of dried Phaseolus vulgaris powderwas studied. The three independent variables are raw material concentration, shaking and centrifugaltime. The dependent variables are both yield percentage of crude extract and alphaamylase enzyme inhibition activity. The experimental design was based on box-behnkendesign. Highest yield percentage of crude extract could get from extraction condition at concentration of 1, 0,1, concentration of 0.15 M ,extraction time for 2hour, and separationtime for60 min. Moreover, the crude extract with highest alpha-amylase enzyme inhibition activityoccurred by extraction condition at concentration of 0.10 M, extraction time for 2 min, and separation time for 45 min ER -