Study on Extraction Technology of Grape Seed Polyphenols and Evaluation of Its Efficacy
The effects of temperature,solid-liquid ratio,extraction concentration and extraction time on the extraction rate of grape seed poly-phenols were studied,by solvent extraction and the effects of grape seed polyphenols on antioxidation,anti-inflammatory and moisturizing were determined.The results showed that the optimum extraction process of grape seed polyphenols was as follows:at 70℃,60％ethanol solution was used,the ratio of material to liquid was 1:20,40 mesh defatted grape seed powder was extracted with 60 r/min,and after evaporation and concentration,the extraction rate of grape seed polyphenols was 20.00％and the purity was 13.58％.Grape seed polyphenols extracted from wine lees still have good antioxidant and anti-inflammatory abilities,and their physical moisturizing ability is equivalent to that of 1％ propyl-ene glycol.
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