查看更多>>摘要:目的 建立葛根芩连片指纹图谱,并采用一测多评法(quantitative analysis of multi-components by single-marker,QAMS)测定其中3'-羟基葛根素、葛根素、3'-甲氧基葛根素、大豆苷、黄芩苷、盐酸巴马汀、盐酸小檗碱、汉黄芩苷、黄芩素、甘草酸铵、汉黄芩素11个化学成分含量.方法 HPLC测定10批葛根芩连片的指纹图谱,建立指纹图谱共有模式,以黄芩苷为参照,计算该成分与3'-羟基葛根素、葛根素、3"-甲氧基葛根素、大豆苷、盐酸巴马汀、盐酸小檗碱、汉黄芩苷、黄芩素、甘草酸铵、汉黄芩素的相对校正因子,并计算其含量.同时对QAMS的计算值与外标法实测值进行比较,以确证QAMS的可行性和科学性.指纹图谱及含量测定色谱条件:采用Waters Xbridge-C18色谱柱(250 mmx4.6mm,5 μm),流动相为乙腈-0.1%磷酸水溶液,梯度洗脱;体积流量1.0 mL·min-1;柱温30 ℃;检测波长260 nm.结果 10批葛根芩连片标定了共有峰20个,指认了其中11个化学成分,10批葛根芩连片相似度均>0.97,3'-羟基葛根素、葛根素、3'-甲氧基葛根素、大豆苷、黄芩苷、盐酸巴马汀、盐酸小檗碱、汉黄芩苷、黄芩素、甘草酸铵、汉黄芩素的线性范围分别为 0.056 6~2.830 2,0.241 2~12.058 6,0.128 0~6.401 0,0.059 7~2.983 5,0.242 7~12.134 9,0.045 7~2.285 7,0.192 8~9.641 0,0.043 3~2.167 0,0.018 0~0.900 2,0.021 0~1.048 4,0.011 5~0.575 4 μg,r2 为 0.999 6~1.000,平均回收率分别 100.23%,102.01%,101.66%,102.73%,100.17%,98.45%,98.41%,100.95%,101.85%,97.97%和 100.09%,RSD分别为1.24%~2.57%(n=6);3'-羟基葛根素、葛根素、3'-甲氧基葛根素、大豆苷、盐酸巴马汀、盐酸小檗碱、汉黄芩苷、黄芩素、甘草酸铵、汉黄芩素的相对校正因子分别为0.860 4,0.605 3,0.850 9,0.582 8,0.557 1,0.498 6,0.767 2,0.652 1,2.608 1,0.545 2,待测成分含量QAMS与外标法实测值RAD为0.03%~2.12%.结论 QAMS结合指纹图谱可为葛根芩连片的定量测定和质量控制提供参考.