枣醋多酚的提取及其对自由基的清除效应

目的]测定枣醋中的多酚含量,并对枣醋多酚的自由基清除能力进行研究。方法]采用不同的溶剂提取枣醋中的多酚,测定枣醋多酚对羟基自由基和超氧阴离子自由基的清除能力。结果]甲醇的提取率最高,多酚物质得率为0.312 5 mg/ml。枣醋多酚对羟基自由基和超氧阴离子自由基的清除作用,随着浓度的增加而逐渐增大,表明枣醋具有很强的抗氧化性。结论]该研究可为枣醋的开发和利用提供参考。

Extraction and Its Free Radical Scavenging Effect of Jujube Vinegar Polyphenol

Objective] The aim was to determine polyphenol content of jujube vinegar,and study the free radical scavenging capacity of the polyphenol.Method] Jujube vinegar polyphenol was extracted with different solvents,and its hydroxyl radical and superoxide anion radical scavenging activity were studied.Result] The results showed that extraction rate of polyphenol could reach 0.312 5 mg/ml with methanol as solvent,which is the highest.The free radical scavenging capacity of the jujube vinegar polyphenol increased with the increasing polyphenol concentration,which indicated jujube vinegar had remarkable antioxidation activity.Conclusion] The study provides reference for development and exploitation of jujube vinegar.