摘要
针对牛胆粉药材中主要活性组分的化学性质,使用具有较好专属性及准确度的HPLC-ELSD建立可准确反映其内在质量的指纹图谱及主要活性组分含量测定方法。采用Phenomenex Gemini C18(4.6 mm×250 mm,5μm)色谱柱,以10 mmol乙酸铵水溶液与乙腈作为流动相进行梯度洗脱,柱温40℃,ELSD漂移管温度为110℃,ELSD氮气流量为2.8 L·h-1。测得13批牛胆粉的甘氨胆酸、甘氨去氧胆酸、牛磺胆酸和牛磺去氧胆酸的含量,并使用化学计量学对牛胆粉药材指纹图谱进行预处理和模式识别分析。结果样品中甘氨胆酸、甘氨去氧胆酸、牛磺胆酸和牛磺去氧胆酸的平均质量分数分别为(25.2±17.0)%,(4.1±3.4)%,(24.5±20.0)%,(5.2±3.8)%,4者质量分数总和占牛胆粉(59.0±26.0)%。化学计量学分析结果表明自制样品与市售样品差异较大,指纹图谱之中有4处区域的色谱信号较小,但对这种差异的影响却不容忽视。所建HPLCELSD方法简便快速,适合从定性和定量的角度对牛胆粉进行质量评价与控制,可以为完善该药材质控标准提供科学依据。
An HPLC-ELSD method with good specificity and good accuracy was used for the studies of fingerprint and quantification of multi-components for cattle bile powder. The chromatographic analysis was carried out on a Phenomenex Gemini C18column（ 4. 6mm × 250 mm,5 μm） with a column temperature of 40 ℃ and a liquid flow-rate of 1. 0 m L·min- 1using 10 mmol ammonium acetate solution and acetonitrile as the mobile phase with a linear gradient. An ELSD was used with a nitrogen flow-rate of 2. 8 L·h^-1,at a drift tube temperature of 110 ℃. The average contents of glycocholic acid,glycodeoxycholic acid,taurocholic acid,taurodeoxycholic acid were（ 25. 2 ± 17. 0） %,（ 4. 1 ± 3. 4） %,（ 24. 5 ± 20. 0） % and（ 5. 2 ± 3. 8） % respectively,and the total content of the four bile acids was（ 59. 0 ± 26. 0） %. Beyond that,the preprocessing and pattern recognition analysis of the chromatographic fingerprints of samples were applied with chemometric method. The results of this chemometric analysis indicated that the samples from market and self-made samples were different signally,and four regions were noteworthy due to their great impact with poor chromatographic signal.All in one,because this HPLC-ELSD method was simple and accurate,it was suitable for the quality assessment and quality control of cattle bile powder and could be the technological base for its standard perfection.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2016年第13期2487-2492,共6页
China Journal of Chinese Materia Medica
基金
国家“重大新药创制”科技重大专项(2014ZX09304307-002)
