【作者】 胡秀芳； 沈生荣； 杨贤强；

【Author】 HU Xiufang SHEN Shengrong Yang Xianqiang (Department of Tea Science,Zhejiang University ,310029)

【机构】 浙江大学茶学系；

【摘要】 茶多酚作为一种天然的高效抗氧化剂已广泛应用于食品、医药、化妆品、环境保护等各个领域。茶多酚的抗氧化作用与其独特的结构密切相关。茶多酚的结构共性—2-苯基苯并吡喃和羟基取代基是其抗氧化作用的结构基础,其中2-苯基苯并吡喃是抗氧化作用的结构依托,羟基是抗氧化作用的结合位点。羟基的位置和数目决定着茶多酚抗氧化活性的大小,此外,△^2（3）双键、4-酮基、3-位取代基、构型、聚合度及油水分配系数等也影响抗氧化活性。更多还原

【Abstract】 As a natural antioxidant ,tea polyphenols have been widely applied in food,medical,cosmetic industry and environmental protection.The antioxidative activity is closely related with its specific structure-2-phenyl chromane as well as the position and number of hydroxyls .the 2-phenyl chromane is the structra! support of antioxidation,and the hydroxyl is the binding site.The position and number of hydroxyl determined the antioxidative activity of polyphenols.Besides,Δ2(3)double bond ,4-keto,3-substituted group,figuration,rate of polymerization and oil/water partition coefficient also influenced the antioxidative activity.更多还原