中药女贞子饮片中8个成分的含量比较研究

目的：针对不同来源女贞子和酒女贞子饮片中8个成分（红景天苷、酪醇、特女贞苷、木犀草苷、木犀草素、芹菜素、齐墩果酸、熊果酸）建立高效液相色谱含量测定方法,并对女贞子、酒女贞子饮片及水煎煮前后所测成分的含量进行比较,为其质量标准提高和临床应用提供依据。方法：采用液相色谱法,使用Agilent Prep-C18（4.6 mm×250 mm,5μm）色谱柱,以乙腈（A）-0.02%磷酸水溶液（B）为流动相,梯度洗脱（0~5 min,5%A→10%A;5~15 min,10%A;15~60 min,10%A→33%A;60~65 min,33%A→90%A;65~75 min,90%A;75~80 min,100%A）,流速1 m L·min-1,检测波长224 nm（测定红景天苷、酪醇、特女贞苷）、349 nm（测定木犀草苷、木犀草素、芹菜素）、206 nm（测定齐墩果酸、熊果酸）,柱温25℃。结果：建立的8个成分含量测定方法简便、可行;女贞子、酒女贞子饮片中红景天苷、酪醇、木犀草素和芹菜素的含量存在显著性差异;2种饮片的水煎液中红景天苷、酪醇、特女贞苷、木犀草苷可检出,且变化明显。结论：木犀草素和芹菜素可以用于饮片的鉴别,红景天苷、酪醇、特女贞苷、木犀草苷具有特征性,可用于女贞子、酒女贞子饮片的质量评价。

Comparative study on main compounds in Ginkgo biloba L. base on mathematical statistics

In this paper,an HPLC-DAD-ELSD method was developed to determine main 20 components of Ginkgo biloba L.leaves from different ages and sources,including six flavonol glycosides,five terpene lactones and nine organic acids.Using statistics method and establishing relevant mathematics models,the measured data has proceeded correlation analysis,principal component analysis,and regression statistics and the results showed generality and specific characteristics.We defined p-hydroxybenzoic acid,catechinic,KRcG and ginkgolide A as characteristic indexes representing commonness and speciality of Ginkgo biloba L.leaf.The four characteristic indexes can reflect the quality of Ginkgo biloba L.leaf,and the intermal relations between them are significant.The contents of other compounds could define the quantity relation with characteristic markers.It simplified the approach of quality control,and provided a basis for quality control of Ginkgo biloba L.