萱草药材质量标准研究

Quality Standard for HemerocallisHerba

目的:建立萱草药材的质量标准。方法:①采用性状和显微鉴别法对萱草药材的性状、叶组织结构和粉末特征进行研究;②TLC法定性鉴别大黄酸;③按(2020年版《中国药典》四部)方法测定水分、总灰分、酸不溶性灰分和浸出物的含量。结果:描述了萱草药材的性状。叶表面观表皮细胞类长方形,气孔平行式,具4个副卫细胞。全草粉末可见草酸钙针晶和导管。TLC斑点清晰,重复性好。7批次样品水分、总灰分、酸不溶性灰分和浸出物的含量分别为11.2%~14.1%、5.6%~9.9%、0.2%~1.8%和10.5%~21.5%。结论:该方法稳定可靠,可应用于萱草药材的质量控制。

Objective:To establish the quality standard for Hemerocallis Herba.Methods:1.Macroscopic and microscopic methods were used to identify the macroscopical characteristics,leaf tissue structure and powder characteristics of Hemerocallis Herba.2.TLC was utilized for the qualitative identification of rhein.3.Chinese Pharmacopoeia method was applied to determining the contents of water,total ash,acid-insoluble ash and extract.Results:The macroscopical characteristics were described.Leaf epidermal cells were nearly rectangular,and the stomatal apparatuse had four subsidiary cells with paralleled arrangement.The needle-like calcium oxalate crystals and vessels could be seen in the powder.The TLC spots were clear and reproducible.In seven batches of samples,the content ranges of water,total ash,acid-insoluble ash and extract were 11.2%~14.1%,5.6%~9.9%,0.2%~1.8%and 10.5%~21.5%,respectively.Conclusion:This method is stable and reliable,which can be used for the quality control of Hemerocallis Herba.