怀地黄中地黄苷A,地黄苷D及益母草苷含量快速分析方法的建立

Chinese Journal of Experimental Traditional Medical Formulae(2018)

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Abstract
目的:建立一种快速测定怀地黄中地黄苷A,地黄苷D,益母草苷含量的方法.方法:应用近红外光谱技术(near infrared reflectance spectroscopy,NIRS)测得85-5,北京1号,白状元,沁怀,白选,沁怀郑共6个品种108份怀地黄样品的近红外光谱图,结合高效液相法(high performance liquid chromatography,HPLC)同时测定的样品中地黄苷A,地黄苷D,益母草苷的含量,并利用TQ软件将光谱信息与测得含量相关联,采用偏最小二乘法(partial least squares,PLS)建立怀地黄中地黄苷A,地黄苷D,益母草苷的定量分析模型.结果:模型的内部交叉验证决定系数(R2)分别为0.924 67,0.934 96,0.951 54,校正均方差(root mean square error of calibration,RMSEC)分别为0.016 6,0.015 9,0.022 8,验证均方差(root mean square error of prediction,RMSEP)分别为0.017 00,0.007 86,0.012 50,交叉验证均方差(root mean square error of cross validation,RMSECV)分别为0.032 13,0.030 36,0.069 22,以及性能指数(performance index,PI)分别为92.5,82.7,83.1;配对样本t检验显示NIR模型预测值与HPLC测得参考值的P分别为0.422,0.549,0.131,均>0.05,表明两组数据无显著性差异.结论:该方法准确、快速、绿色,可用于怀地黄中地黄苷A,地黄苷D,益母草苷的定量分析.
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Key words
near infrared spectrum instrument,Rehmanniae Radix,rapid detection,partial least squares,rehmaionoside A,rehmaionoside D,leonuride
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