黄连-吴茱萸药对化学成分的HPLC-DAD-MS分析

建立黄连-吴茱萸药对半仿生提取液化学成分的HPLC-DAD-MS分析方法，研究黄连-吴茱萸配伍机制的物质基础。以Hypersil BDS C₁₈为色谱柱，梯度洗脱后，综合分析不同样品的色谱峰保留时间、紫外光谱，一级和二级全扫描质谱图，归属了黄连-吴茱萸(6∶1)半仿生提取液中的17个色谱峰，8个来自吴茱萸，其他9个均来自黄连，确认了4个色谱峰分别为药根碱、羟基吴茱萸碱、巴马汀和小檗碱；推断了3个色谱峰分别为表小檗碱、非洲防己碱和黄连碱，同时测定了小檗碱和巴马汀的含量。黄连配伍吴茱萸后半仿生提取无新物质生成，但小檗碱和巴马汀的溶出量降低。

Analysis of the main components of Coptis-Evodia herb couple by HPLC-DAD-MS

A comprehensive HPLC-DAD-MS method was developed to study the chemical components of semi-bionic extract of Coptis-Evodia herb couple. The extract was isolated on a Hypersil BDS C18 column (4.6 mm x 200 mm, 5 microm) using acetonitrile-ammonium formic buffer as mobile phase by gradient elution. Detection was performed on DAD and MS equipped with an electrospray ionization (ESI) source by full scan and product full scan on positive mode. The chromatogram of Coptis-Evodia showed seventeen main peaks, eight of which were from Evodia while the others were from Coptis. By comparison of the retention time, the on-line UV spectra and MS spectra, four peaks were identified as jatrorrhizine, hydroxevodiamine, palmatine and berberine, and three peaks were deduced as epiberberine, columbamine and coptisine. In addition, berberine and palmatine were quantitatively determined. No new component was created in the semi-bionic extract of the herb couple, yet the solubilities of berberine and palmatine decreased.