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目的建立测定中药赤小豆中儿茶素-7-O-β-D-吡喃葡萄糖苷含量的高效液相色谱法,为中药赤小豆质量标准的制定提供依据。方法采用体积分数50%甲醇超声提取,以Grace PrevailTMC18Column(4.6 mm×250 mm,5μm)为固定相,乙腈-水(6∶94)为流动相,流速1.0 mL.min-1,柱温30℃,检测波长230 nm。结果色谱峰分离度良好,线性范围为0.04~1.00mg.mL-1,平均加样回收率为101.2%。结论本方法操作简单、准确度高、重现性好,可用于赤小豆药材的质量控制。
OBJECTIVE To establish a HPLC method for the determination of catechin-7-O-β-D-glucopyranoside in Chixiaodon, and provide the basis for the establishment of the quality standard of Chixiaodon. Methods The column was extracted with 50% methanol by volume. The column was monitored by Grace Prevail TM C18 Column (4.6 mm × 250 mm, 5 μm) with acetonitrile-water (6:94) as the mobile phase at a flow rate of 1.0 mL · min- , Detection wavelength 230 nm. Results The chromatographic peaks were well resolved with a linear range of 0.04-1.00 mg.mL-1 and an average recovery of 101.2%. Conclusion The method is simple, accurate, reproducible and can be used for the quality control of Radix et Rhizoma.