Abstract

Abstract: Antioxidative substances of Pranus Cerasifera Ehrh Cv.Atropurpurca were extracted with 30% ethanol and theirantioxidative activities were essayed by Chemiluminescence. The effects of light, heat and pH on the stabilities of theseantioxidative substances were also studied . It was found that the extracts of Pranus Cerasifera Ehrh Cv.Atropurpurcashowed strong scavenging effects on the superoxidized anionic radical(O2-•)produced from alkaline hemimellitic acid systemand alsoen hydroxyl radical (•OH) produced by Vc-Cu-barm-H2O2 system, The estracts were resistant to heat and light andcould exist stably in acidic medium.

Key words: Pranus Cerasifera Ehrh Cv.Atropurpurca , Antioxidatibe actibity , Stability

HU Ying-Fen, MENG Jie, HU Bo-Lu. [J]. FOOD SCIENCE, 2002, 23(8): 274-276.

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