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首页> 外文期刊>Phytochemical Analysis >Classification of Greek Mentha pulegium L. (pennyroyal) samples, according to geographical location by Fourier transform infrared spectroscopy.
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Classification of Greek Mentha pulegium L. (pennyroyal) samples, according to geographical location by Fourier transform infrared spectroscopy.

机译：根据傅立叶变换红外光谱仪的地理位置，对希腊曼陀罗（pennyroyal）样品进行分类。

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Introduction - Mentha pulegium L. (pennyroyal) is one of the four most commercially important Mentha species, even it is not a cultivated plant. It can be abundantly located in the Iberian Peninsula and North African countries. In Greece it grows in the wild and it is scattered all over the country. Pennyroyal is best known for its essential oil, with Spain and Morocco being the largest producers in the world. Mid-infrared spectroscopy has been applied to determine the origin of various samples. Objectives - In this work Fourier transform infrared spectroscopy (FT-IR) combined with canonical discriminant analysis has been applied to distinguish 70 Greek pennyroyal samples according to their collection areas. Material and methods - Pennyroyal nonpolar organic extracts were prepared using ultrasound-assisted solvent extraction. The spectra of the extracts were recorded in the range of 4000-400 cm-1 and the best discrimination was achieved in the spectral region 1720-1650 cm-1. Results - Spectral features for the discrimination of pennyroyal samples among the different collection areas occur primarily in the carbonyl region and are correlated with the main volatile constituents of the extracts (menthone, isomenthone, pulegone, piperitone). All areas were easily differentiated by canonical discriminant analysis. The percentages of correct classification and validation were 94.3 and 90.0%, respectively. Conclusion - The combination of FT-IR spectroscopy and multivariate analysis provides a rapid and ambient method to discriminate pennyroyal samples in terms of geographical origin.Digital Object Identifier http://dx.doi.org/10.1002/pca.1322
机译：简介-薄荷（Mentha pulegium）L.（pennyroyal）即使不是栽培植物，也是四种在商业上最重要的 Mentha 物种之一。它可以位于伊比利亚半岛和北非国家中。在希腊，它生长在野外，遍布全国。 Pennyroyal以其精油而闻名，西班牙和摩洛哥是世界上最大的生产国。中红外光谱已被用于确定各种样品的来源。目标-在这项工作中，傅里叶变换红外光谱（FT-IR）与规范判别分析相结合已被用于根据收集区域区分70个希腊戊二醛样品。材料和方法-使用超声辅助溶剂萃取制备Pennyroyal非极性有机萃取物。提取物的光谱记录在4000-400 cm -1 的范围内，并且在1720-1650 cm -1 的光谱区域获得了最好的分辨力。结果-用于区分不同采集区域中的戊二醛样品的光谱特征主要出现在羰基区域，并且与提取物的主要挥发性成分（薄荷酮，异薄荷酮，普勒高酮，哌啶酮）相关。通过标准判别分析可以轻松地区分所有区域。正确分类和确认的百分比分别为94.3％和90.0％。结论-FT-IR光谱学和多元分析相结合提供了一种快速，环境化的方法来根据地理来源区分戊二醛样品。数字对象标识符http://dx.doi.org/10.1002/pca.1322

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