目的 确定银杏叶最适宜采收季节。方法 采用 HPL C法 (二级管阵列检测器 DAD和蒸发光散射检测器EL SD)分别测定银杏叶中总黄酮和总内酯的含量。结果 不同树龄、不同季节的银杏叶总黄酮、总内酯含量不同。结论 银杏叶的总黄酮、总内酯以二、三年生的为高;总黄酮在 5月份、总内酯在 9月份含量为高。

Object To define suitable gathering season of Ginkgo biloba L. leaves. Methods The content of total flavonoids and total terpene lactones in G. biloba leaves were determined by HPLC DAD and HPLC ELSD. Results The content of total flavonoids and total terpene lactones in G. biloba were distinct in different ages of tree and collecting seasons. Conclusion The content of total flavonoids and total terpene lactones in G. biloba are the highest in 2 3 ages of tree. The total flavonoid is the highest in May and total terpene lactone is the highest in September.

国家科委“中药现代化研究与产业化开发”资助项目(99-929-01-01AE99206)