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http://dx.doi.org/10.3746/jkfn.2009.38.1.116

Optimization for The Alcoholic Fermentation of Concentrated Grape Juice Using Response Surface Methodology  

Kim, Yoon-Sook (Korea Food Research Institute)
Kim, Ro-Sa (Korea Food Research Institute)
Choi, Hee-Don (Korea Food Research Institute)
Choi, In-Wook (Korea Food Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.38, no.1, 2009 , pp. 116-120 More about this Journal
Abstract
Response surface methodology (RSM) was applied to optimize alcohol fermentation of concentrated grape juice. Sugar concentration ($X_1$), agitation rate ($X_2$) and fermentation time ($X_3$) were chosen as the independent variables of the central composite design (CCD). Dependent variables were alcohol content ($Y_1$) and total acidity ($Y_2$). To optimize two dependent variables, desirability function was defined as $Y_1$=10.0% and $Y_2$=minimum. The optimum conditions for alcohol fermentation were $19.98^{\circ}Bx$ (sugar concentration), 104.1 rpm (agitation rate) and 89.67 hr (fermentation time). The predicted responses were 10.0% in alcohol content and 0.86% in total acidity. The coefficients of determination ($R^2$) were 0.948 and 0.958, which indicate that the model fit was highly significant (p<0.001). The experimental values were 10.1% for alcohol content and 0.88% for total acidity. These values were similar to the predicted values from RSM.
Keywords
concentrated grape juice; alcoholic fermentation; response surface methodology (RSM);
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Times Cited By KSCI : 7  (Citation Analysis)
Times Cited By SCOPUS : 2
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