In the quality research of the raw materials, the TLC method in China Pharmacopeia (2005 edition) was improved and a characteristic components, 5, 7-dimethoxycoumarin (limettin), was added as the marker substance.

• 在药材的质量标准研究中,改进了2005年版药典中的薄层鉴别条件,增加了特征性成分5,7-二甲氧基香豆素的对照品鉴别。