高效液相色谱法测定壮骨颗粒中补骨脂素与异补骨脂素的含量

HPLC method to assay the content of psoralen and angelicin in Zhuanggu granules

目的：建立高效液相色谱法测定壮骨颗粒中补骨脂素和异补骨脂素的含量。方法色谱柱为 Agilent Zorbax C18柱（4．6 mm ×250 mm ，5μm），流动相为甲醇唱水（45∶55），检测波长为245 nm ，流速为1．0 ml／min ，柱温为25℃，进样量为10μl。采用70％乙醇水浴方法提取壮骨颗粒中的补骨脂素和异补骨脂素。结果补骨脂素与异补骨脂素在3.75-40μg／ml范围内呈良好的线性关系，对方法精密度（n＝6）、重复性（n＝6）和稳定性（12 h）进行考察，相对标准偏差（RSD）均小于2％。加样回收率（n＝6）为94％-105％。结论该测定方法简便、快速、准确，可用于壮骨颗粒的临床快速质量控制。

Objective To develop a HPLC method for psoralenand angelicin content assay in Zhuanggu granules .Meth-ods Agilent Zorbax C18 column（4 .6 mm × 250 mm ,5 μm） was used with methanol and water （45∶55） as mobile phase .The detection wavelength was set at 245 nm .The flow rate was 1 .0 ml/min and column temperature at 25 ℃ .The injection volume was 10 μl .Psoralenand angelicin were extracted with 70% ethanol under water bath .Results The linearity was obtained over 3 .75-40 μg/mlfor psoralenand angelicin .The RSDs were less than 2% .The average recovery was between 94% and 105% . Conclusion This simple and accurate HPLC method was suitable for the quality control of Zhuanggu granules .