目的采用反相HPLC法同时测定广金钱草中vicenin-1、夏佛塔苷和vicenin-3的含量。方法采用KromasilRP—C,。色谱柱(250mm×4.6mm,5肛m),柱温30℃,流动相A相为水-0.1%甲酸水溶液、B相为甲醇,梯度洗脱:0—8min、30%-32%B,8~32min、32%~34%B,32~60min、34%~40%B,流速1.0mL·min-1,检测波长272nm。结果vicenin-1在0.230—1.380p,g(r=0.9998)、夏佛塔苷在0.702~1.872p,g(r:0.9998)、vicenin-3在0.220—1.320P,g(r=0.9999)的线性关系良好;平均回收率(rt=6)分别为99.44%、99.58%、100.01%。结论所用方法具有简便、快速准确、重复性好的特点,可为广金钱草药材的质量控制提供依据。
OBJECTIVE To establish an RP - HPLC method for simultaneous determination of vicenin - 1, schafloside and vicenin -3 in Desmoclium styracifolium. METHODS The determination was carried out on a Kromasil RP - C lS column (250 mm x 4. 6 mm,5 p~m ) with the column temperature set at 30 ~C. The mobile phase consisted of 0.1% aqueous formic acid (A) and metha- nol(B). A gradient program was used according to the following profile:0 -8 min,30% -32% B;8 -32 rain,32% -34% B;32 -60 min,34% -40% B. The detection was carried out at 272 nm,and the flow rate was kept at 1.0 mL-min-l. RESULTS The method showed a good linear relationship within the range of 0.230 - 1. 380 p~g for vicenin - 1 ( r = 0. 9998 ), 0. 702 - 1. 872 ixg for schaftoside ( r =0.9998 ) and 0.220 - 1. 320 g for vicenin - 3 ( r = 0. 9999 ) ; the average recovery was 99.44% for vicenin - 1, 99.58% for schaftoside and 100.01% for vicenin - 3. CONCLUSION The method is simple, rapid and accurate with good reproducibility, which provides the basis for quality control of Desmodium styracifolium.