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目的完善中药材荔枝草的质量标准。方法采用显微鉴别、薄层鉴别、水分、总灰分、浸出物、含量测定等项目对荔枝草的质量进行考察。结果荔枝草显微鉴别特征明显;薄层鉴别斑点清晰,易于识别;质量标准为:水分≤12.0%,总灰分≤10.0%,醇溶性浸出物≥20.0%;含量测定原儿茶酸在1.068~106.8μg·m L?1内呈良好的线性关系(r=0.999 7),其含量≥70μg·g?1。结论荔枝草药材的显微鉴别、薄层鉴别、水分、总灰分、浸出物、含量测定研究可为该药材质量标准的修订、提高提供参考依据。
Objective To improve the quality standard of Chinese herbal medicine Lychee. Methods The quality of litchi was investigated by microscopic identification, thin layer identification, water content, total ash content, extract and content determination. The results showed that the identification characteristics of lychee were obvious, the identification spots were clear and easy to identify, the quality standards were: moisture ≤12.0%, total ash ≤10.0%, alcohol-soluble extract ≥20.0%; determination of protocatechuic acid at 1.068 ~ 106.8μg · m L · 1 showed a good linear relationship (r = 0.999 7), its content was ≥70μg · g -1. Conclusions The microscopic identification, TLC identification, water content, total ash content, extract and content determination of the medicinal materials of lychee can provide a reference for the revision and improvement of the quality standard of the medicinal materials.