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《Chemical Research and Application》 2003-02
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Dtermination of seabuckthorn flavone and study of its antioxidant effect

ZHAO Er lao,ZHANG Hai rong,GAI Qing qing,HAN Ya wen (Department of Chemistry,Xinzhou Teacher's College,Xinzhou 034000,China)  
The content of flavones of the seabuckthorn ( Hippophae rhamnoides L. )root bark,branch bark and leaves were determined using UV vis spectrophotometry.In the meantime,the scavenging hydroxyl free radical(OH ·)and superoxide anion free radical(O 2 ·- )of the extracts of seabuckthorn root bark,branch bark and leaves were measured through Fenton reaction and pyrogallol autoxidation method.The results showed that the seabuckthorn root bark,branch bark and leaves had a strong capacity on scavenging free radical.The scavenging rates of hydroxyl free radical were 69.2%,62.2% and 74.1%,respectively.The inhibition rates of superoxide anion free radical were 10.5%,12.3% and 33.3%,respectively.Finally the antioxidant mechanism of seabuckthorn flavones were tentatively explored.
【CateGory Index】: O657.3
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