【摘要】 采用Schaal烘箱法和Rancimat法,分别考察了不同纯度、不同添加量的天然VE、茶多酚、鞣花酸、竹叶黄酮等天然抗氧化剂对α-亚麻酸乙酯的抗氧化效果。分析两种方法的结果,可以得出几种天然抗氧化剂对α-亚麻酸乙酯抗氧化效果的顺序为:90%茶多酚>82%鞣花酸>50%茶多酚>竹叶黄酮,在添加量为0.05%时对α-亚麻酸乙酯的抗氧化效果最好;Rancimat法较Schaal烘箱法更直观、快速简便,试剂损耗小。更多还原

【Abstract】 The antioxidative effect of natural antioxidants,including the natural vitamin E,ellagic acid,tea polyphenols,bamboo-leaves flavonoids,on α-ethyl linolenate were studied by schaal-oven method and Rancimat method.The results showed that antioxidantive effects of natural antioxidants on α-ethyl linolenate in order were 90% tea polyphenols >82% ellagic acid>50% tea polyphenols>bamboo-leaves flavonoids.α-ethyl linolenate could be stablized by adding 0.05% natural antioxidants.Compared to schaal-oven method,Rancimat method is faster,more convenient and easier.更多还原