Study on antioxidative effects of natural antioxidants to α-ethyl linolenate

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 acid50% tea polyphenolsbamboo-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.