Abstract
Resveratrol, a stilbene phytoalexin in plants, is believed to benefit human health. In this study, an optimized enzyme-assisted method was developed to extract the total content of trans-resveratrol (free or combined with glucose) in peanut seeds, followed by detection using high-performance liquid chromatography. The extraction process was optimized by Box-Behnken design and response surface methodology. The optimized enzyme concentration, digestion time, pH, and temperature were 3.02g/L, 57.06min, 5.88, and 51.05°C, respectively. Validation tests indicated that the experimental yield of trans-resveratrol was 0.183 ± 0.007 µg/g with a relative standard deviation of 3.87% (n=5) under the optimal condition, which was closely agreed with the predicted value (0.182 µg/g). The recoveries obtained from the spiked samples were varied from 89.4 to 103.9%. Therefore, this study will provide a useful method for quantification of total trans-resveratrol in peanut seeds.
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