丹皮药材指纹图谱定性和有效成分定量分析方法研究

目的　建立丹皮药材的反相高效液相色谱定性和定量分析方法。方法　RP HPLCPlanetsilC18分析柱 (15 0mm× 4 .6mm ,5 μm) ,流动相为甲醇 水 冰醋酸 (44∶5 6∶0 .1) ,流速为 1.0mL·min-1,检测波长为 2 4 0nm ,柱温为室温 ,对丹皮药材进行指纹图谱定性分析 ,并对丹皮中的有效成分丹皮酚进行定量测定。结果　在此色谱条件下 ,13份不同丹皮药材的RP HPLC指纹图谱中可检出 11个相对位置稳定的色谱峰 ,通过色谱峰间峰面积的相关性分析 ,可以确定 10个峰可作为定性鉴别的指标峰 ;丹皮药材中丹皮酚含量为 1.32 %～ 2 .78%。结论　丹皮RP HPLC指纹图谱定性和有效成分定量分析方法具有较好的针对性和准确性 ,可用于丹皮药材的质量控制。

Analytical methods with qualitative fingerprint and quantitative measurement of effective components of Cortex Moutan

Objective To establish a qualitative and quanti ta tive method with RP-HPLC for controlling the quality of Cortex Moutan. Methods The experimental conditions of the RP-HPLC method wer e as follows: planetsil C 18 column (150 mm×4.6 mm, 5 μm), mobile phase of methanol-water-acetic acid ( 44∶56∶0.1), flow rate at 1.0 mL·min -1, detection wavelength at 240 nm and room temperature. The qualitative fingerprint of Cortex Moutan and the quantitative measurement of paeonol wer e carried out under the chromatographic conditions mentioned above. Res ults Eleven comparatively stable peaks were detected among 13 differ ent samples, from which 10 common peaks used as index peaks for qualitative iden tification were conformed by correlating the peak areas. At the same time, the c ontents of paeonol in samples range from 1.32% to 2.78%. Conclusion The analytical method with qualitative fingerprint of Cortex Moutan and quantitative measurement of paeonol can effectively be used to control the quality of Cortex Moutan.