反相高效液相色谱法测定肾舒冲剂水煎液中的小檗碱

 :应用反相高效液相色谱法检测了肾舒冲剂水煎液中的小檗碱。样品经超声提取后,以C18化学键合硅胶为固定相,乙腈-0.04mol/LH3PO4(体积比为42∶58)为流动相,用349nm的波长定量检测。测定结果表明,小檗碱的质量浓度在1.2～19.2mg/L范围内线性良好,最低检测限为0.6mg/L,测定批内(n=5)及批间(n=5)相对标准偏差分别为0.6%～3.5%和5.3%～6.5%,回收率为89.10%～91.35%。

Determination of Berberine in Decocted Liquid from Shen shu Granules with Water by Reversed-Phase Liquid Chromatography

A reversed-phase liquid chromatographic method has been developed and validated for the analysis of berberine in decocted liquid from Shenshu granules with water. The drug was extracted with supersonic wave and then measured by HPLC using a Hypersil C18 column and an acetonitrile -0.04 mol/L H3PO4(42:58, V/V) as mobile phase. Berberin was quantified by ultraviolet absorbance at 349 nm. The method proved to be linear in the range of 1.2-19.2 mg/L. The lower limit of detection of berberin was 0.6 mg/L. Intra-day and inter-day coefficients of variation of assay for berberin were 0.6%-3.5%(n = 5) and 5.3%-6.5% (n = 5), respectively. The recoveries of the method were 89.1%-91.4%.