3）银杏叶甲醇提取液的DPPH•清除率、O2-•清除率、总还原力与总黄

3) The DPPH•clearance rate, O2-•clearance rate and total reducing power of the methanol extract of Ginkgo biloba are very significantly positively correlated with total flavonoids, and have little or negative correlation with the content of terpene lactones, polysaccharides and procyanidins. It shows that total flavonoids are the main material basis for the antioxidant effect of Ginkgo biloba methanol extract.

3) The DPPH removal rate, O2-removal rate, total reduction force and total flavonoids were significantly positively correlated, with little or no correlation with the content of steroids, polysaccharides and prothyroids, indicating that total flavonoids are the main material basis for antioxidant action of Ginkgo biloba methanol extract.

3) The DPPH · scavenging rate, O2 - · scavenging rate and total reducing power of methanol extract of Ginkgo biloba were significantly and moderately positively correlated with total flavonoids, but had little or negative correlation with terpene lactone, polysaccharide and proanthocyanidins content, indicating that total flavonoids are the main material basis of antioxidant effect of methanol extract of Ginkgo biloba.<br>