目的 建立菊苣Cichorium intybus中绿原酸、秦皮乙素、异绿原酸B和异绿原酸A的一测多评方法。方法 以秦皮乙素为内参物,分别建立绿原酸、异绿原酸B和异绿原酸A的相对校正因子,并用该校正因子进行绿原酸、异绿原酸B和异绿原酸A量的计算(计算法),实现一测多评;同时采用外标法测定菊苣中4种成分的量(实测法),并比较计算值与实测值间的差异性,验证所建立方法的准确性、适用性和重复性。结果 8批菊苣中绿原酸、异绿原酸B和异绿原酸A量的计算值与实测值无显著差异。实验建立的菊苣中绿原酸、秦皮乙素、异绿原酸B和异绿原酸A的一测多评法准确性、可行性、重复性好。结论 一测多评法测定菊苣中绿原酸、秦皮乙素、异绿原酸B和异绿原酸A的质量评价模式得到了验证,可用于菊苣药材的质量控制。

Objective To establish the quantitative analysis of multi-components by single marker (QAMS) method to determine the content of chlorogenic acid, aesculetin, isochlorogenic acid B, and isochlorogenic acid A in Cichorii Herba (chicory). Methods Selecting aesculetin as the internal reference substance, the relative correction factors (RCF) of chlorogenic acid, isochlorogenic acid B and isochlorogenic acid A were established respectively, and then the contents of the three constituents were calculated by RCF, to achieve the quality of chicory through QAMS. At the same time, the external standard method was used to determine the content of four constituents in chicory and compare the difference between calculated values and measured values, so as to verify the construction method for accuracy, applicability, and repeatability. Results No significant difference was observed in chlorogenic acid, isochlorogenic acid B, and isochlorogenic acid A from eight batches of chicory in the quantitative results by these two methods. The validated QAMS method had good precision, reproducibility, and reliability. Conclusion The established QAMS method is suitable and feasible for the quality control of chicory.

国家自然科学基金资助项目(81403152);教育部高等学校博士学科点专项科研基金(20130013120001,20120013130002);北京中医药大学青年教师专项自主课题(2013-QNJSZX008);北京中医药大学科研创新团队(2011-CXTD-014);北京中医药大学自主课题项目(2015-JYB-XS074)