OBJECTIVE:To develop a method for simultaneous determination of chlorogenic acid,geniposide,gentiopicro-side,ferulic acid,baicalin and ammonium glycyrrhizinate in Yindan pinggan capsule. METHODS:HPLC method was adopted. The separation was performed on Wonda SilTM-C18 column with mobile phase consisting of acetonitrile-0.4% phosphoric acid solu-tion(gradient elution)at the flow rate of 0.8 mL/min. The detection wavelength were set at 325 nm(chlorogenic acid,ferulic ac-id),250 nm (geniposide,ammonium glycyrrhizinate) and 275 nm (gentiopicroside,baicalin). The column temperature was 30 ℃. RESULTS:The linear ranges were 0.087-3.480 μg for chlorogenic acid(r=0.9998),0.201-8.040 μg for geniposide(r=0.9997),0.200-8.000 μg for gentiopicroside(r=0.9995),0.016-0.640 μg for ferulic acid(r=0.9999),0.105-4.200 μg for ba-icalin (r=0.9999) and 0.028-1.120 μg for ammonium glycyrrhizinate (r=0.9995),respectively. The limits of quantitation were 1.31,0.75,1.14,1.25,0.94,0.98 ng,and the limits of detection were 0.87,0.67,0.96,0.93,0.60,0.88 ng,respectively. RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 99.9%-101.9%(RSD=0.7%,n=6), 98.7%-100.9%(RSD=0.9%,n=6),98.1%-101.5%(RSD=1.4%,n=6),98.5%-101.3%(RSD=1.3%,n=6),98.5%-101.7%(RSD=1.2%,n=6),98.2%-101.4%(RSD=1.2%,n=6),respectively. CONCLUSIONS:The method is simple and accurate , can be used for simultaneous determination of chlorogenic acid,geniposide,gentiopicroside,ferulic acid,baicalin and ammonium glycyrrhizinate in Yindan pinggan capsule.%目的:建立同时测定茵胆平肝胶囊中绿原酸、栀子苷、龙胆苦苷、阿魏酸、黄芩苷、甘草酸铵含量的方法.方法:采用高效液相色谱法.色谱柱为Wonda SilTM-C18,流动相为乙腈-0.4%磷酸溶液(梯度洗脱),流速为0.8 mL/min,检测波长分别为325 nm(绿原酸和阿魏酸)、250 nm(栀子苷和甘草酸铵)、275 nm(龙胆苦苷和黄芩苷),柱温为30℃.结果:绿原酸、栀子苷、龙胆苦苷、阿魏酸、黄芩苷、甘草酸铵检测进样量线性范围分别为0.087~3.480μg(r=0.9998)、0.201~8.040μg(r=0.9997)、0.200~8.000μg(r=0.9995)、0.016~0.640μg(r=0.9999)、0.105~4.200μg(r=0.9999)、0.028~1.120μg(r=0.9995);定量限分别为1.31、0.75、1.14、1.25、0.94、0.98 ng,检测限分别为0.87、0.67、0.96、0.93、0.60、0.88 ng;精密度、稳定性、重复性试验的RSD<2.0%;加样回收率分别为99.9%~101.9%(RSD=0.7%,n=6)、98.7%~100.9%(RSD=0.9%,n=6)、98.1%~101.5%(RSD=1.4%,n=6)、98.5%~101.3%(RSD=1.3%,n=6)、98.5%~101.7%(RSD=1.2%,n=6)、98.2%~101.4%(RSD=1.2%,n=6).结论:该方法简便、结果准确,适用于茵胆平肝胶囊中绿原酸、栀子苷、龙胆苦苷、阿魏酸、黄芩苷、甘草酸铵含量的同时测定.
展开▼
