Discrimination of fennel chemotypes applying IR and Raman spectroscopy: discovery of a new γ-asarone chemotype.

Discrimination of fennel chemotypes applying IR and Raman spectroscopy: discovery of a new γ-asarone chemotype.
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应用红外和拉曼光谱区分茴香化学型:发现新的γ-细辛脑化学型

DOI:
10.1021/jf405752x
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发表时间:
--
影响因子:
6.1
通讯作者:
Schulz H.
Schulz H.
中科院分区:
农林科学1区
文献类型:
--
作者:
Gudi G;Krähmer A;Krüger H;Hennig L;Schulz H.

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不同的振动光谱方法已经被应用于根据不同的挥发性物质的个体特征来对不同的小茴香化学类型进行分类。利用衰减全反射傅里叶变换红外光谱(ATR-FTIR)和近红外光谱(NIR)可以成功地区分不同化学类型的完整小茴香果实。所研究的小茴香果实的溶剂提取物(CCl_4)在ATR-FTIR和FT-拉曼光谱中显示出与单个挥发性成分(反式-茴香脑、芬奇酮、雌二醇、氧化胡椒烯酮、γ-细辛脑、柠檬烯)相关的特征指纹图谱。特别是νCC和νC吸收带对光谱的贡献不同。在系统聚类分析的基础上,根据气相色谱(GC)和振动光谱数据对所考虑的小茴香材料进行了分类。此外,即使是“甜的”和“苦的”小茴香水果,都属于四环-茴香脑化学型,也可以成功地进行区分。在这项研究中使用的所有振动光谱技术都是快速和易于应用的。因此,它们可以可靠地区分不同的小茴香化学类型,也可以用于自由性质的现场测量。
Various vibrational spectroscopy methods have been applied to classify different fennel chemotypes according to their individual profile of volatile substances. Intact fennel fruits of different chemotypes could be successfully discriminated by attenuated total reflectance Fourier transform infrared (ATR-FTIR) and near infrared (NIR) spectroscopy. Solvent extracts (CCl4) of the considered fennel fruits showed characteristic fingerprints with marker bands related to the individual volatile components (trans-anethole, fenchone, estragole, piperitenone oxide, γ-asarone, limonene) for ATR-FTIR and FT-Raman spectroscopy. Especially νCCand νCOabsorption bands contribute to the different spectral profiles. On the basis of hierarchical cluster analysis, the considered fennel accessions were classified according to gas chromatographic (GC) and vibrational spectroscopic data. Furthermore, even a discrimination of “sweet” and “bitter” fennel fruits, both belonging to thetrans-anethole chemotype, could be successfully performed. All vibrational spectroscopical techniques used in this study are rapid and easy to apply. Hence, they allow different fennel chemotypes to be reliably distinguished and can also be used for on-site measurement in free nature.
DOI: 10.1039/b408933m
发表时间: 2004-01-01
期刊: ANALYST
影响因子: 4.2
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发表时间: 1999
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作者:
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发表时间: 2002-01-01
影响因子: 3.5
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DOI: --
发表时间: 1999
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