Abstract: The rancimat method,Hydrogen Peroxide-Inducement method and Xanthine-Xanthine Oxidase method were applied in our experiment to study the functional activies of Isoflavones.The vitro test indicated that Isoflavones had very strong bioactivities.The Daidzein,Genistein and their β-glycoside conjugates possessed different functional activities in different oxidation reaction systems,such as antioxidant reaction, antihemolysis reaction and free radidcal clearing away effect The reaction mechanism was also studied and proved that the corresponding relation ship existed between their structures and activities. We hope that these conclusions would be applicadle to the clinic research.

Key words: Isoflavons Daidzein Antioxidant Antihemolysis Free radical