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目的:测定中药三叶委陵菜中鞣质含量。方法:采用吕氏络合量法,并改用50％丙酮溶液直接振摇浸提替代其水 蒸气抽提鞣质部分。结果:测得三叶委陵菜生药中鞣质含量为11％,略高于药典法的测定结果。结论:在控制生药质量和制 定质量标准时,总鞣质含量的测定方法以选用络合量法或药典法为佳。
OBJECTIVE: To determine the tannin content in Chinese traditional medicine Potentilla. Method: The Lue complex method was used, and 50% acetone solution was directly shaken and leached instead of the water vapor to extract the enamel part. RESULTS: The tannin content in the crude drug of the three-leaf Potentilla was measured as 11%, which was slightly higher than that of the Pharmacopoeia method. Conclusion: When controlling the quality of crude drugs and setting quality standards, the method of determining the total tannin content is preferably based on the use of complexation method or pharmacopoeia method.