目的 建立一测多评法同时测定黄连及其炮制品中6种生物碱的量。方法 采用高效液相色谱法,以盐酸小檗碱为内参物,测定其与盐酸药根碱、盐酸非洲防己碱、盐酸表小檗碱、盐酸黄连碱、盐酸巴马汀的相对校正因子,利用该相对校正因子计算其他5种生物碱的量,同时利用外标法测定黄连及其炮制品中6种生物碱的质量分数,比较2种测定方法的差异,验证一测多评法的可行性和准确性。结果 在线性范围内,盐酸小檗碱与盐酸药根碱、盐酸非洲防己碱、盐酸表小檗碱、盐酸黄连碱、盐酸巴马汀的相对校正因子分别为1.131、0.999、1.011、1.076、1.025,在不同实验条件下相对校正因子重现性良好,6种生物碱成分量计算值与实测值间无显著性差异。结论 一测多评法同时测定黄连及其炮制品中6种生物碱可行而且准确。

Objective To establish a quantitative analysis of multi-components by single marker (QAMS) for the simultaneous determination of six alkaloids in crude and processed Coptidis Rhizoma. Methods An HPLC method was established to determine the six alkaloids (jatrorrhizine hydrochloride, columbamine hydrochloride, epiberberine hydrochloride, coptisine hydrochloride, palmatine hydrochloride, and berberine hydrochloride) by the external standard method (ESM). With this HPLC method, the berberine hydrochloride was used as the internal standard (IS) to determine five relative correction factors (RCFs) of the five other alkaloids, and their contents in all samples were calculated by their RCFs at the same time. Compared with the content results determined by the ESM and QAMS, the feasibility and accuracy of QAMS method were verified. Results Within a certain range, the RCFs of jatrorrhizine hydrochloride, columbamine hydrochloride, epiberberine hydrochloride, coptisine hydrochloride, and palmatine hydrochloride to berberine hydrochloride were 1.131, 0.999, 1.011, 1.076, and 1.025, respectively, with the good repeatability in different experimental conditions. There was no significant difference between the QAMS method and ESM method. Conclusion The QAMS method is feasible and accurate for the simultaneous determination of the six alkaloids in crude and processed Coptidis Rhizoma.

国家科技惠民计划项目(2013GS500102);重庆市科委项目(2015);药典委员会项目;重庆市卫生局项目(2012-2-49);国家中药资源中心重庆分中心能力提升建设(cstc2014ptyjd10001)