白芍药材薄层色谱鉴别和高效液相色谱特征图谱研究

目的：研究白芍的薄层色谱和高效液相色谱指纹图谱,为科学评价及有效控制其质量提供可靠方法。方法采用薄层色谱法检测白芍样品中的芍药苷,展开剂为三氯甲烷-乙酸乙酯-甲醇-甲酸（40∶5∶10∶0.2）。采用高效液相色谱法,梯度洗脱,测定10批白芍样品。色谱条件为：Kromasil C18色谱柱（250 mm×4.6 mm,5μm,12 nm）,流速1.0 mL/min,柱温35℃,流动相A为乙腈,流动相B为0.05%磷酸水。结果薄层色谱斑点清晰。10批白芍样品获得包括芍药苷（9号峰）在内的15个共有峰,其中安徽、浙江的白芍饮片指纹图谱相互之间差异较小。结论白芍的指纹图谱特征性及专属性强,可用于白芍饮片的质量控制。

TLC Identification and HPLC Fingerprint of Paeoniae Radix Alba

Objective To study TLC and HPLC fingerprint of Paeoniae Radix Alba;To provide reliable methods for its quality control and evaluation. Methods TLC was performed to detect paeoniflorin with CHCl3-EtOAc-methanol-formic acid （40∶5∶10∶0.2） as the developing solvent system. The HPLC chromatographic separation was performed on Kromasil C18 column （250 mm× 4.6 mm, 5μm, 12 nm）. The mobile phase was a mixture of acetonitrile-0.05%phosphoric acid in gradient elution with flow rate of 1 mL/min. The detection wavelength was set at 254 nm, and the column temperature was 35 ℃. Results The TLC spots were clear. Fifteen common peaks including paeoniflorin （the ninth peak） in the HPLC profile were found in ten batches of samples of Paeoniae Radix Alba in different growing areas, the fingerprints of samples from Anhui Province and Zhejiang Province showed little difference. Conclusion Fingerprint of Paeoniae Radix Alba showed unique features, and can be used to control its quality.