甘草真伪品的FTIR光谱法鉴别研究

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摘要：采用傅里叶变换红外(FTIR)光谱法并结合二维相关(Two-dimensional correlation spectroscopy)分析技术分别对药用植物甘草(药材对照品)及其伪品刺果甘草进行了无损快速鉴别研究。结果表明：虽然甘草和伪品刺果甘草都是来源于同一科属，但两者所含化学组分的含量不同，其红外光谱图既有一定的差异，又有一定的相似。而在红外二阶导数谱图上差异较明显，在二维红外谱图的差别不但较明显而且很直观。凭借这些差异，可方便地进行真伪鉴别，同时还进一步表明了这两种甘草药材中化学组分之间的差异。该法无损，快速，准确，样品量少，为客观评价中药材的来源，真伪，优劣等提供了一种新的方法和手段。

关键词：二维相关红外光谱法;甘草;刺果甘草;真伪鉴别

Abstract：Standard Gancao (Glycyrrhiza uralensis Fisch) and false Ciguogancao (Glycyrrhiza pallidiflata Batal) were identified fast, nondestructively by Fourier transform infrared spectroscopy(FTIR)combined with derivative spectra and two-dimensional correlation spectroscopy (2D) in the present article. The result shows that although the two kinds of Gancao belong to one genius, there are some certain differences in their chemical components that are reflected in the IR spectra, but with some similarity and dissimilarity in the IR spectra. The two kinds of Gancao are quite different from each other in second derivative spectra and 2D spectra. Based on the differences reflected in the IR and 2D IR, the standard gancao can be identified from the false easily and clearly. The result also proved that there is a relationship between the IR spectra and the chemical components of the herbs. This method is fast, accurate and nondestructive, and the wastage of sample is less. The fast, accurate property of 2D spectroscopy makes it a powerful and new approach to evaluating medicinal herbs impersonally.

Key words：2D-IR correlation infrared spectroscopy analysis;Gancao(Glycyrrhiza uralensis Fisch);Ciguogancao(Glycyrrhiza pallidiflata Batal);Identification

收稿日期: 2004-05-16 修订日期: 2004-11-28

中图分类号:

O657.3

通讯作者: 孙素琴

引用本文:

阿依古丽·塔西^{1, 2},周群¹,董晓鸥³,孙素琴^1*. 甘草真伪品的FTIR光谱法鉴别研究[J]. 光谱学与光谱分析, 2006, 26(07): 1238-1241.
AYIGULI·Tashi^{1, 2}, ZHOU Qun¹, DONG Xiao-ou³, SUN Su-qin^1* . Study on the Identification of Standard and False Gancao by Fourier Transform Infrared Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(07): 1238-1241.

链接本文:

https://www.gpxygpfx.com/CN/Y2006/V26/I07/1238

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