Antioxidative effect of Psoralea corylifolia L.on Lard

Antioxidative effects of Psoralea corylifolia L.and the extracts on lard were measured by OSI method.The results show that the antioxidative activity of Psoralea corylifolia L.and petroleum ether and chloroform extracts are stronger than that of 0.02% BHT.