关于《中国药典》2020年版泽泻质量标准修订的建议

Recommendations on quality standards of Alismatis Rhizoma in Chinese Pharmacopoeia(2020 edition)

完善泽泻药材和饮片的质量标准,为《中国药典》2020年版泽泻药材和饮片质量标准的修订提供参考和建议。参照《中国药典》2015年版四部通则,对泽泻药材和饮片的水分、总灰分、重金属及有害元素、农药残留及醇溶性浸出物进行测定;以硅胶GF254板为薄层板,以二氯甲烷-甲醇(15∶1)为展开剂,建立了以23-乙酰泽泻醇B和23-乙酰泽泻醇C及泽泻对照药材为对照的薄层鉴别方法;采用HPLC,以乙腈-水为流动相,梯度洗脱,在208 nm和246 nm波长下分别对23-乙酰泽泻醇B和23-乙酰泽泻醇C进行定量分析。采用建立的方法,对37批泽泻药材、30批泽泻饮片和19批盐泽泻的质量进行评价,根据实验结果,建立了泽泻药材和饮片的质量标准。该标准具有很好的专属性和重复性,可用于泽泻药材与饮片的质量控制。建议《中国药典》2020年版对泽泻的【来源】、【鉴别】(薄层)、【浸出物】(盐泽泻)、【含量测定】项进行相应的修订。

The present research was launched to improve the quality standards of Alismatis Rhizoma and supply scientific evidence and recommendations for the quality control of Alismatis Rhizoma in Chinese Pharmacopoeia(Ch. P) 2020 edition. The contents of water, total ash, heavy metals and deleterious element, pesticide residues and alcohol-soluble extract were analyzed according to the methods listed in the volume Ⅳ of Ch. P 2015 edition. Alisol B 23-acetate, alisol C 23-acetate and reference herbs were used to identify Alismatis Rhizoma by TLC method, which was developed by using a mixture of dichloromethane-methanol(15∶1) as developing solvent on silica gel GF254 precoated plates. In HPLC method, alisol B 23-acetate and alisol C 23-acetate were separated with acetonitrile-water as the mobile phase and detected at 208 nm and 246 nm, respectively. Thirty-seven batches of crude drugs, thirty batches of prepared slices and nineteen batches of salt prepared slices of Alismatis Rhizoma were determined according to the methods established. The quality standards established based on the research results were specific and repeatable, and suitable for the quality evaluation of Alismatis Rhizoma. We recommended that the botanical sources, TLC examination, alcohol-soluble extract of salt prepared slices and content determination should be revised in the Ch. P 2020 edition.