Authors
Benoit Biais, J William Allwood, Catherine Deborde, Yun Xu, Mickael Maucourt, Bertrand Beauvoit, Warwick B Dunn, Daniel Jacob, Royston Goodacre, Dominique Rolin, Annick Moing
Publication date
2009/3/19
Journal
Analytical chemistry
Volume
81
Issue
8
Pages
2884-2894
Publisher
American Chemical Society
Description
A metabolomics approach combining 1H NMR and gas chromatography−electrospray ionization time-of-flight mass spectrometry (GC−EI-TOFMS) profiling was employed to characterize melon (Cucumis melo L.) fruit. In a first step, quantitative 1H NMR of polar extracts and principal component analyses (PCA) of the corresponding data highlighted the major metabolites in fruit flesh, including sugars, organic acids, and amino acids. In a second step, the spatial localization of metabolites was investigated using both analytical techniques. Direct 1H NMR profiling of juice or GC−EI-TOFMS profiling of tissue extracts collected from different locations in the fruit flesh provided information on advantages and drawbacks of each technique for the analysis of a sugar-rich matrix such as fruit. 1H NMR and GC−EI-TOFMS data sets were compared using independently performed PCA and multiblock hierarchical PCA (HPCA …
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