基于多元功效成分的山茱萸药材质量标准提升研究

建立山茱萸药材中环烯醚萜苷类及三萜酸类化学成分的含量测定方法,为山茱萸药材的质量标准提升提供技术支撑。采用HPLC-UV法,以乙腈-0.1%甲酸水溶液为流动相梯度洗脱,检测波长为240 nm,建立同时测定莫诺苷、马钱苷、当药苷的含量测定方法;采用HPLC-ELSD法,以甲醇-0.5%乙酸铵(87:13)为流动相,建立同时测定齐墩果酸、熊果酸的含量测定方法。结果:显示在上述色谱条件下,莫诺苷、马钱苷、当药苷分别在质量浓度5.335~213.4 mg·L^-1(r = 0.999 9),5.515~220.6 mg·L^-1(r=1.000 0),1.992~79.68 mg·L^-1(r=1.000 0)线性关系良好,平均加样回收率均在98.49%~99.28%,RSD<2%;齐墩果酸、熊果酸分别在质量浓度7.74~154.8 mg·L^-1(r=0.996 4),10.82~216.4 mg·L^-1(r=0.999 6)线性关系良好,平均加样回收率均在98.11%~99.27%,RSD <3%。表明所建立的方法简单快速,准确可靠,重复性好,可用于客观评价山茱萸药材的品质及其质量控制,为完善山茱萸药材现行质量标准提供了实验数据,对于保证其质量和临床疗效具有重要意义。

Establishment of quality standard for Corni Fructus based on the multiple bioactive constituents

This study is to establish the methods for determination of iridoid glycosides and triterpenic acids in Corni Fructus and provide technical support for the quality control of Corni Fructus.Morroniside, loganin and sweroside were determined by HPLC-UV method with acetonitrile and 0.1% formic acid as the mobile phase, and the detective wavelength was set at 240 nm. Oleanolic acid and ursolic acid were determined by HPLC-ELSD method with methanol-0.5% ammonium acetate(87:13)as the mobile phase. The results showed that the linear ranges of morroniside, loganin and sweroside were 5.335-213.4 mg·L^-1(r=0.999 9), 5.515-220.6 mg·L^-1(r=1.000 0), 1.992-79.68 mg·L^-1(r=1.000 0), respectively. The average recoveries of the above three iridoid glycosides were 98.49%-99.28% with RSDs of recoveries being less than 2%.The linear ranges of oleanolic acid and ursolic acid were 7.74-154.8 mg·L^-1(r=0.996 4),10.82-216.4 mg·L^-1(r=0.999 6), respectively. The average recoveries of the above two triterpenic acids were 98.11%-99.27% with RSDs of recoveries being less than 3%. The method established in this research is simple, rapid and reliable, and can be used for quality control of Corni Fructus. Furthermore, the research provided experimental data for the improvement of present quality standard of Corni Fructus, which has important significance to guarantee its quality and clinical curative effect.