蛇床子中5种成分的HPLC测定法

目的：建立对蛇床子药材中花椒毒素、异虎耳草素、香柑内酯、欧前胡素、蛇床子素进行同时测定的RP-HPLC法。方法：采用Alltech C₁₈色谱柱(4.6 mm×250 mm,5 μm),流动相乙腈-0.1%醋酸水溶液,梯度洗脱,流速：1 mL·min^-1,检测波长245,325 nm；柱温为40 ℃。结果：花椒毒素、异虎耳草素、香柑内酯、欧前胡素、蛇床子素的线性范围分别为1～20 μg·mL^-1(r=0.999 9),1～20 μg·mL^-1(r=0.999 9),1～20 μg·mL^-1(r=0.999 8),100～1 200 μg·mL^-1(r=0.999 7),100～2 000 μg·mL^-1(r=0.999 9),回收率均大于95%。结论：本法简便、准确、重现性好,适用于蛇床子中5种成分的同时测定。

Simultaneous determination of 5 active components in fructus cnidii by HPLC

OBJECTIVE: To develop an RP-HPLC method for simultaneous determination of 5 constituents in Fructus Cnidii. METHOD: Analysis was performed on an Alltech C18 (4.6 mm x 250 mm, 5 microm) column. The mobile phases were acetonitrile water and acetic acid with gradient elution. The flow rate was 1 mL x min(-1). The monitoring wavelength was 325 nm and 245 nm. The column temperature was 40 degrees C. RESULT: The linear response ranges were 1-20 microg x mL(-1) (r = 0.999 9) for xanthotoxin, 1-20 microg x mL(-1) (r = 0.999 9) for isopimpinellin, 11-20 microg x mL(-1) (r = 0.999 8) for bergapten, 100-1 200 microg x mL(-1) (r = 0.999 7) for imperatorin, 100-2 000 microg x mL(-1) (r = 0.999 9) for osthole. The average recoveries were all above 95%. CONCLUSION: The method is simple, sensitive and accurate with good reproducibility.