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Citrus monstruosa discrimination among several citrus species by multivariate analysis of volatiles: A metabolomic approach

Petretto, Giacomo Luigi, Sarais, Giorgia, Maldini, Maria Teresa, Foddai, Marzia, Tirillini, Bruno, Rourke, Jonathan P., Chessa, Mario and Pintore, Giorgio 2016. Citrus monstruosa discrimination among several citrus species by multivariate analysis of volatiles: A metabolomic approach. Journal of Food Processing and Preservation 40 (5) , p. 950. 10.1111/jfpp.12674

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Abstract

The origin and taxonomy of Citrus monstruosa (Rutaceae) are currently unknown and thus a nontargeted metabolomic analysis on the flavedo volatiles was performed. Headspace solid‐phase micro extraction coupled with gas chromatography analysis was applied to eight Citrus spp. including Citrus monstruosa, and the chemical composition of the volatile organic compounds (VOC) was analyzed to give a chemical comparison between different Citrus species. Forty‐four metabolites were detected across the species: several monoterpenes were found in all Citrus spp. and among them limonene comes first in all Citrus spp. ranging from 96.7 to 66.7%. Conversely, some molecules were found to be specific for only a few of the samples. The classical univariate evaluation of the VOC data is unlikely to give objective data for the cultivar classification; a multivariate approach, principal component analysis, is an easy to use, powerful tool. Therefore, a chemometric comparison between chromatographic data of all Citrus spp. was performed with the aim of understanding the role of VOC in the discrimination of the eight studied cultivars.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Wiley
ISSN: 0145-8892
Date of Acceptance: 17 October 2015
Last Modified: 21 Jan 2019 16:15
URI: http://orca-mwe.cf.ac.uk/id/eprint/118455

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