目的:建立反相高效液相色谱法同时测定茵陈蒿汤(茵陈、栀子、大黄)中滨蒿内酯、儿茶素、绿原酸、东莨菪内酯、金丝桃苷、秦皮乙素、京尼平苷、槲皮素、京尼平、大黄酸、芦荟大黄素、大黄酚、大黄素、大黄素甲醚的含量。方法:采用Eclipse Plus C_(18)(250 mm×4.6 mm,5μm)色谱柱,以乙腈(A)-0.1%磷酸水溶液(B)为流动相,梯度洗脱,流速1.0mL·min(-1),柱温30℃,检测波长210 nm(儿茶素、绿原酸、秦皮乙素、京尼平、东莨菪内酯、滨蒿内酯、槲皮素)、238 nm(京尼平苷、金丝桃苷)、254 nm(芦荟大黄素、大黄酸、大黄素、大黄酚、大黄素甲醚),进样量25μL。结果:14个成分可实现完全分离,在一定的线性范围内呈良好的线性关系(r〉0.999 8)、精密度(RSD≤2.0%)、稳定性(RSD≤1.9%)和重复性(RSD≤1.8%)良好,平均回收率(n=6)在94.4%-98.0%范围内,RSD在0.86%-2.8%范围内。3批茵陈蒿汤中滨蒿内酯、儿茶素、绿原酸、东莨菪内酯、金丝桃苷、秦皮乙素、京尼平苷、槲皮素、京尼平、大黄酸、芦荟大黄素、大黄酚、大黄素、大黄素甲醚14个成分的含量测定结果分别为0.136-0.168、0.080-0.104、0.403-0.470、0.008-0.009、0.061-0.068、0.020-0.027、0.269-0.306、0.036-0.048、0.005-0.006、0.122-0.164、0.037-0.044、0.030-0.037、0.011-0.014、0.007-0.010 mg·g(-1)。结论:该方法经方法学验证,可用于茵陈蒿汤中14个化学成分的含量测定。
Objective:To establish a RP-HPLC method for simultaneous determination of scoparone,catechin,chlorogenic acid,scopoletin,hyperoside,esculetin,geniposide,quercetin,genipin,rhein,aloe-emodin,chrysophanol,emodin and physcion in Yin-Chen-Hao-Tang(Artemisia capillaris Thunb.,Gardenia jasminoidesEllis and Rheum PalmatumL.).Methods:The separation was carried out on an Eclipse Plus C_(18)(250 mm×4.6 mm,5 μm)column eluted with the mobile phase of acetonitrile(A)-0.1% phosphoric acid aqueous solution(B)in a gradient elution manner at a flow rate of 1.0mL·min(-1).The detection wavelength was set at 210 nm for scoparone,catechin,chlorogenic acid,scopoletin,esculetin,quercetin and genipin,at 238 nm for geniposide and hyperoside,and at 254 nm for rhein,aloe-emodin,chrysophanol,emodin and physcion.The column temperature was set at 30 ℃ and the injection volume was 25 μL.Results:Satisfactory separation was obtained for the 14 compounds.In the given concentration range,all the compounds showed good linear correlation(r0.999 8).The RSD values of precision,stability and repeatability were lower than 2.0%,1.9% and 1.8%,respectively.The average recoveries of the 14 compounds were 94.4%-98.0% with the RSD values of 0.86%-2.8%(n=6).The contents in 3 samples were in the ranges of 0.136-0.168 mg·g(-1) for scoparone,0.080-0.104 mg·g(-1) for catechin,0.403-0.470 mg·g(-1) for chlorogenic acid,0.008-0.009 mg·g(-1) for scopoletin,0.061-0.068 mg·g(-1) for hyperoside,0.020-0.027 mg·g(-1) for esculetin,0.269-0.306 mg·g(-1) for geniposide,0.036-0.048 mg·g(-1) for quercetin,0.005-0.006 mg·g(-1) for genipin,0.122-0.164 mg·g(-1) for rhein,0.037-0.044 mg·g(-1) for aloe-emodin,0.030-0.037 mg·g(-1) for chrysophanol,0.011-0.014 mg·g(-1) for emodin and 0.007-0.010 mg·g(-1) for physcion.Conclusion:This method was proved by methodology validation that it is suitable for the determination of those14 constituents in Yin-Chen-Hao-Tang.