[关键词]
[摘要]
目的 对银杏叶中总内酯进行研究,为银杏叶资源的合理利用提供科学依据。方法 采用HPLC-ELSD法测定不同树龄、采收季节和干燥方法的银杏叶中总内酯。结果 树龄小于10年,5~7月采收,干燥方法为晒干的银杏叶中总内酯含量较高。结论 银杏叶中总内酯的含量受树龄、采收季节和干燥方法的影响,应合理采收银杏叶,保护银杏叶资源。
[Key word]
[Abstract]
Objective To determine the total lactones in Ginkgo biloba leaves and provide the scientific basis for the rational utilization of G. biloba leaves resources. Methods HPLC-ELSD method was used to determine the total lactones in G. biloba leaves at different tree ages, in different harvest seasons, and by various drying methods. Results T he highest content of the total lactone was observed in the leaves at tree age of no more than 10 years, collected from May to July, and drying under the sun. Conclusion The contents of the total lactones in G. biloba leaves are affected by tree ages, harvest seasons, and dry methods, so G. biloba leaves should be collected reasonably to protect their resources.
[中图分类号]
[基金项目]
国家重大新药创制专项(2011ZX09401-097)