Title: Optimization of extraction technology of antioxidant components from R.Setate×R.Rugosa using response surface methodology
Abstract: A central composite design was employed to optimize the extraction conditions of antioxidant components from R.Setate×R.Rugosa by ethanol with four factors:ethanol concentration,the ratio of liquid to solid,temperature and extraction time.And the combined effects of these variables on total antioxidant power were investigated.Results showed that the generated regression models adequately explained the data variation and significantly represented the actual relationship between the independent variables and the responses.The results indicated that the effect order of four factors was as follows:temperature,liquid to solid,ethanol concentration and time.The canonical analysis revealed that the optimal conditions for extraction were:ethanol concentration 50%,the ratio of liquid to solid 25∶1,temperature 90℃,time 120min.Under optimal conditions,the predicted value of the total antioxidant capacity was 3365μmol·g-1,the testing value was 3343.9μmol·g-1,and its relative error was 0.63%.There were no obvious difference between the testing value and theoretic values from regression equation and the regression model was fitted well.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 1
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