HPLC法测定银荞胶囊中4种黄酮类成分的含量

摘要

OBJECTIVE:To establish a method for the determination of 4 flavonoids constituents in Yinqiao capsules. METH-ODS:HPLC method was adopted. The Hypersil ODS C18 column was used with the mobile phase A of methanol-water-acetic acid (10∶88∶2,V/V/V)and B of methanol-water-acetic acid(88∶10∶2,V/V/V)in gradient elution at the flow rate of 1.0 ml/min;the de-tection wavelength was 327 nm,the column temperature was 25 ℃,and the volume was 10 μl. RESULTS:There was a good linear relationship between the amount of quercetin and peak area in the range of 0.050 9-1.018 0 μg(r=0.999 8),kaempferide in the range of 0.050 2-1.004 0 μg(r=0.999 5),isorhamnetin in the range of 0.051 0-1.020 0 μg(r=0.999 4)and rutin in the range of 0.050 4-1.007 0 μg(r=0.999 8). RSDs of precision,stability and repeatability tests were <2%. The average recoveries were 100.09%(RSD=0.93%,n=9),99.83%(RSD=0.75%,n=9),100.51%(RSD=1.17%,n=9) and 101.19%(RSD=1.08%,n=9). CONCLUSIONS:The method is amount specific,stable and reproducible and can be used for the quality control of Yinqiao capsules.%目的：建立同时测定银荞胶囊中4种黄酮类成分含量的方法。方法：采用高效液相色谱法。色谱柱为Hypersil ODS C18，流动相A为甲醇-水-乙酸（10∶88∶2，V/V/V），流动相B为甲醇-水-乙酸（88∶10∶2，V/V/V），采用梯度洗脱，流速为1.0 ml/min，检测波长为327 nm，柱温为25℃，进样量为10μl。结果：槲皮素、山柰素、异鼠李素、芦丁的进样量分别在0.0509～1.0180、0.0502～1.0040、0.0510～1.0200、0.0504～1.0070μg范围内与各自峰面积呈良好的线性关系（r分别为0.9998、0.9995、0.9994、0.9998）；精密度、稳定性、重复性试验的RSD均小于2％；平均加样回收率分别为100.09％、99.83％、100.51％、101.19％，RSD分别为0.93％、0.75％、1.17％、1.08％（n＝9）。结论：该方法专属性强、结果稳定、重复性好，可作为控制银荞胶囊质量的方法。