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目的：对国内外２０个厂家银杏叶提取物制剂中萜类内酯的含量进行考察，以对比国内外银杏叶制剂的质量状况。方法：采用高效液相示差折光检测法测定银杏叶提取物制剂中白果内酯及银杏内酯Ａ，Ｂ，Ｃ的含量，回收率及精密度良好。结果：萜类内酯的含量参差不齐，所考察的国内绝大部分产品萜类内酯含量低，或白果内酯与银杏内酯比例失调。结论：为保证我国银杏叶制剂的质量与疗效，对我国银杏叶的提取与制剂工艺进行深入的规范化研究并严格统一质量标准已势在必行
Objective: To investigate the content of terpene lactones in Ginkgo biloba extract preparations from 20 manufacturers at home and abroad in order to compare the quality of ginkgo leaf preparations at home and abroad. Methods: The content of ginkgolide and ginkgolide A, B and C in Ginkgo biloba extract were determined by HPLC. The recovery and precision were good. RESULTS: The content of steroidal lactones was uneven, and most of the domestic products examined had low steroidal lactones, or the ratio of ginkgolides and ginkgolides was out of balance. Conclusion: In order to ensure the quality and efficacy of Ginkgo biloba leaf preparations in China, it is imperative to carry out an in-depth standardized research on the extraction and preparation process of Ginkgo biloba leaf in China and strictly harmonize the quality standards.