Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
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Zhongguo Zhong Yao Za Zhi · May 1998
[Seasonal and sexual variety of Ginkgo flavonol glycosides in the leaves of Ginkgo biloba L].
HPLC methods have been developed for the determination of Ginkgo flavonol glycosides in the Ginkgo biloba leaves obtained from May to November in the fallen leaves and in the leaves obtained from female and male trees. The method includes hydrolysis of the leaves and subsequent quantitative chromatographic assay of the aglycones, followed by calculation of Ginkgo flavonol glycosides content. ⋯ The content range is 0.96% to 0.44%. Male trees have higher content of glycosides than female trees.