HPLC method to assay the content of psoralen and angelicin in Zhuanggu granules
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摘要: 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,5 μm),流动相为甲醇-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10 μl。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3.75~40 μg/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。Abstract: Objective To develop a HPLC method for psoralenand angelicin content assay in Zhuanggu granules. Methods 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.
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Key words:
- HPLC /
- Zhuanggu granules /
- psoralen /
- angelicin
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