基于谱学技术鉴别4种龙胆科“地格达”类蒙药材

Study on identification of four kinds of Gentianaceae Mongolian medicine Digeda with spectroscopy techniques

为探讨谱学技术在龙胆科＂地格达＂类蒙药材鉴别中的应用,分别采用近红外光谱分析和差示扫描量热分析技术对4种龙胆科＂地格达＂类蒙药材进行研究,并对得到的特征图谱进行系统分析。在近红外一维图谱4 250~4 400,5 650~5 800cm-1四者存在一定差异,在二阶导数图谱4 100~4 400,4 401~4 900,5 400~5 800 cm-1四者呈现显著差异;并且四者的DSC曲线具有明显不同的拓扑图形、特征峰及峰顶温度。通过近红外光谱分析和差示扫描量热分析2种谱学技术可实现4种龙胆科＂地格达＂类蒙药材的高效、准确鉴别,为龙胆科＂地格达＂类蒙药材的快速鉴别提供科学依据。

To study the identification of Gentianaceae Mongolian medicine Digeda with spectroscopy techniques, near infrared spec- troscopy and differential scanning calorimetry techniques were applied to study on the identification of 4 kinds of Gentianaceae Mongoli- an medicine Digeda, and characteristic spectrums obtained were systematically analyzed. In NIR study, the four species of Digeda exist some differences in 4 250-4 400 cm-1 and 5 650-5 800 cm-1 of one-dimensional spectra, and show significant differences in 4 100- 4 400 cm-~ , 4 401-4 900 cm-1 and 5 400-5 800 cm-1 of the second derivative spectra- DSC curves of them present distinct topological pattern, characteristic peak and peak temperature. Using near infrared spectroscopy and differential scanning calorimetry analysis can realize efficient and accurate identification of four kinds of Mongolian medicine Digeda, and provide scientific basis for the efficient and accurate identification of other Gentianaceae Mongolian medicine Digedz.