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介绍一种采用紫外分光光度法测定金莲花片剂中总黄酮甙含量的方法。以金莲花中提取出的牡荆甙及荭草甙的混合物为总黄酮的对照标准,于340nm波长处进行测定。本法操作简便,重复性好。加样回收率为100.8%。该法可用来指导生产工艺的改进及控制金莲花片剂的产品质量。
A method for the determination of total flavonoids in T. chinensis tablets by UV spectrophotometry was introduced. A mixture of vitexin and valerian which was extracted from the lotus flower was used as a control standard for total flavonoids and was measured at a wavelength of 340 nm. This method is simple and reproducible. The recovery rate was 100.8%. This method can be used to guide the improvement of the production process and to control the product quality of Trollius tablets.