滇老鹳草药材鉴别方法改进
2021-07-20黄云先赵健胜曹云芸
黄云先 赵健胜 曹云芸



【摘 要】 目的:对《云南省中药饮片标准》2005年版第二册滇老鹳草标准中鉴别方法改进。方法:用显微及专属性强的没食子酸对照品TLC薄层色谱鉴别。结果:显微鉴定作为鉴别中药、中成药的手段之一,其方法可变性不强、操作简便、而特异性较强,薄层鉴别引进代表性成份没食子酸对照品进行定性。结论:改进方法简便、快捷,准确度高,专属性强,重现性好,可用于滇老鹳草药材的鉴别及质量控制。
【关键词】 滇老鹳草;TLC鉴别;没食子酸;显微鉴别
【中图分类号】R284 【文献标志码】 A 【文章编号】1007-8517(2021)09-0044-04
Abstract:Objective To improve the identification method of Geranium nepalense Sweet in the second volume of the standard of yunnan Chinese medicine decoction piece (2005 edition) Method Method with microscopic and and specific reference substance Gallic acid was identified by TLC.Result Microscopic identification as a way to identify traditional Chinese medicine, proprietary Chinese medicine, one of its methods variability is not strong, easy to operate, and the specificity is stronger, The reference substance of gallic acid was introduced into TLC for qualitative analysis.Conclusion The improved method is simple, rapid, accurate, specific and reproducible, and can be used for the identification and quality control of Geranium nepalense Sweet.
Keywords:Geranium Yunnanensis; Tlc Identification; Gallic Acid; Microscopic Identification
滇老鹳草来源于牻牛儿苗科植物滇老鹳草Geranium nepalense Sweet干燥地上部分。别名老鹳草、五叶草、老官草、六阳草、五瓣草、猫脚迹、老观草[1]、尼泊尔老鹳草[2]。老鹳草来源于牻牛儿苗科的两属植物,即牻牛儿苗属和老鹳草属的不同植物[4]。牻牛儿苗属植物我国约有四种,老鹳草属植物我国约有55种,云南省约产21种。《云南省中药饮片标准》2005年版第二册收载的滇老鹳草为尼泊尔老鹳草Geranium nepalense Sweet。老鹳草属植物全草富含老鹳草鞣质,干叶含老鹳草鞣质、金丝桃苷,又含类没食子酸、琥珀酸、钙盐、甜菜碱[3]、黄酮类槲皮素、山奈酚[2]等,《云南省中药材标准》2005年版第二册·彝族药中对滇老鹳草的鉴别对照药材薄层色谱鉴别,本实验参照文献[5],通过对云南省丽江古城区和玉龙县5个批次的滇老鹳草样品做了显微鉴别及专属性较强的成分没食子酸的薄层色谱鉴别,以建立一个专属性更强的鉴别方法,从而达到控制滇老鹳草药材质量的目的。……
