藏药川西獐牙菜及其不同提取物的红外光谱分析

doi:10.3964/j.issn.1000-0593(2014)11-2973-05

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摘要：利用红外光谱三级鉴定方法对藏药川西獐牙菜及其不同溶液提取物进行分析研究。选择川西獐牙菜中含量相对较高的药用成分龙胆苦苷作为不同溶液提取物的对照成分进行红外光谱和二阶导数光谱的分析;同时对不同浓度乙醇提取物进行二维相关光谱分析。结果显示，龙胆苦苷红外光谱中1 611和1 075 cm^-1处的两个主要特征峰强度的变化趋势，和川西獐牙菜不同溶剂提取物中龙胆苦苷含量变化趋势一致;提取溶剂极性相近时，提取物的红外光谱图相似;随着提取溶液极性的逐渐降低，提取物的红外谱图中2 853，1 733，1 464，1 277和1 161 cm^-1等处吸收峰强度逐渐增强，提取物中酯类化合物含量逐渐增加，萜类化合物的提取率逐渐增加;红外光谱图极为相近的不同浓度乙醇提取物在二维红外光谱图中有很明显的差异。龙胆苦苷特征峰强度的变化趋势和不同提取物中龙胆苦苷含量变化趋势的一致性说明红外光谱分析结果能体现分析对象中所含有成分的含量变化;川西獐牙菜原药材，水提物和不同浓度乙醇提取物谱图的相似性和相似度的变化规律，说明传统用药水煎液和低浓度醇提物的科学性;红外光谱技术可成为川西獐牙菜不同提取物后期药理活性成分宏观控制，和多以复方入药的藏药研究中准确、快速、有效的分析方法。

关键词：川西獐牙菜;提取物;红外光谱;二阶导数光谱;二维相关光谱

Abstract：The objective of the present study is to research the herb of Swertia mussotii Franch and its different extracts by tri-step infrared spectroscopy. The main constitute of Swertia mussotii Franch-gentiamarin, which is also the higher content constitute, was selected as the control components to analyze the infrared spectroscopy and second derivative infrared spectroscopy of different extracts of Swertia mussotii Franch, at the same time, the different concentration of ethanol extracts were also analyzed by two-dimensional correlation spectroscopy(2D-COS). The results indicated that the intensity of 1 611 and 1 075 cm^-1 of gentiamarin, which are its two main absorptions in the infrared spectra, has the positive correlation with the content change in different extracts. The infrared spectroscopy of extracts are similar if the polarity of extract solvents is close; with the decreases in solution polarity, the intensity of 2 853，1 733，1 464，1 277 and 1 161 cm^-1 in infrared spectroscopy of different extracts is increased, the content of esters and the extraction percentage terpenoid compounds are also increased; the different concentration of ethanol extracts has obviously difference when they are analyzed by two – dimensional correlation spectroscopy(2D-COS). The positive correlation between the intensity of absorptions and the content of the gentiamarin indicates that the infrared spectroscopy can reflect the content change in constitute; the similar and the change trend of the different concentrations of ethanol extract infrared spectroscopy approve the scientificalness of decoction of traditional medicine; infrared spectroscopy that used in the research can be used as an accurate, rapid and effective method in the pharmacological activity tests of transitional herbal Swertia mussotii F. and it’s different extracts, even in the research on the tibetan medicine.

Key words：Swertia mussotii Franch;Extracts;Fourier transform infrared spectroscopy;Second derivative infrared spectroscopy;Two dimensional IR correlation spectroscopy

收稿日期: 2013-12-10 修订日期: 2014-04-15

中图分类号:

O657.3

通讯作者: 孙素琴，魏立新 E-mail: sunsq@mail.tsinghua.edu.cn; lxwei@nwipb.cas.cn

引用本文:

杨红霞^{1, 2}，马芳³，杜玉枝¹，孙素琴^3*，魏立新^1* . 藏药川西獐牙菜及其不同提取物的红外光谱分析 [J]. 光谱学与光谱分析, 2014, 34(11): 2973-2977.
YANG Hong-xia^{1, 2}, MA Fang³, DU Yu-zhi¹, SUN Su-qin^3*, WEI Li-xin^1* . Study on the Tibetan Medicine Swertia mussotii Franch and Its Extracts by Fourier Transform Infrared Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(11): 2973-2977.

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https://www.gpxygpfx.com/CN/10.3964/j.issn.1000-0593(2014)11-2973-05 或 https://www.gpxygpfx.com/CN/Y2014/V34/I11/2973

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