诃子对食用油脂抗氧化作用的研究

Study on antioxidative effects of Terminalia Chebula Retz.on edible oil

用不同溶剂提取诃子中的抗氧化物质。以猪油作底物 ,采用碘量法研究诃子提取物的抗氧化作用及与其它物质的协同作用。结果表明 :诃子提取物均有较强的抗氧化作用 ,不同溶剂提取物抗氧化性强弱的顺序为 :乙酸乙酯>95%乙醇>60 %乙醇>水>正己烷 ;氨基酸对95 %乙醇提取物的抗氧化作用无协同效应 ,VC 、柠檬酸对其具有一定协同效应 ,特别是当VC 、VE 与提取物按1∶1∶1比例混合后产生极其显著的协同效应。

Antioxidative substances of Terminalia Chebula Retz.were extracted with different solvents and the antioxidative activities with other materials were studied by Na2S2O3 I2 titrimatric method using lard as substrates.It was found that all extracts of Terminalia Chebula Retz.have strong antioxidative effects and the antioxidative activities of different solvent extracts decreased in the order:ehtyl acetate>95%ethanol solution>60%ethanol solution>water>n hexane.While amino acids had no synergistic effect with 95%ethanol extracts,VC and citric acid had.When VC,VE and extracts were mixed in 1∶1∶1,mixture showed very strong synergistic effects.