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Acta Botanica Gallica
Botany Letters
Volume 157, 2010 - Issue 1
727
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Original Articles

Analyse des lipides et autres composés volatils de Deglet Nour, cultivar de palmier dattier (Phoenix dactylifera L.), par chromatographie en phase gazeuse couplée à la spectrométrie de masse

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Pages 127-133 | Received 23 Dec 2008, Accepted 15 Apr 2009, Published online: 26 Apr 2013
 

Abstract

Chemical analysis of volatile compounds of roots and palms (leaflets) of Phoenix dactylifera L. is described here for the first time. Fifty four molecules are detected by gas chromatography (GC) coupled with mass spectrometry (MS), forty one of them are identified. Roots contain forty one volatile substances (97.2%), seventeen from them are fatty acids (50.7%) with methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate predominance (24.9%). Twenty three volatile components (99.1%) occur in palms; nine are fatty acids (45.7%) which the most abundant are the iso—palmitic acid (13.8%) and the 1,3,5-benzene tricarboxylic acid, trimethyl ester (13%). In addition to fatty acids and their methyl esters, date palm organs contain various other classes of volatile organic compounds. The date palm, plants with great economic importance through its fruit, could be through its vegetative organs, a considerable potential source of interesting natural organic substances in various fields.

Résumé

L'analyse chimique des composés volatils des racines et des palmes (folioles) du palmier dattier Phoenix dactylifera L. est ici décrite pour la première fois. Cinquante quatre molécules sont détectées par chromatographie en phase gazeuse (GC) couplée à la spectrométrie de masse (MS), dont quarante et une identifiées. Les racines renferment quarante et une substances volatiles (97,2%), dix sept d'entre elles sont des acides gras (50,7%) avec une prédominance du méthyle 3-(3,5-di-tert-butyl-4-hydroxyphényl) propionate (24,9%). Les palmes ne contiennent que vingt trois constituants volatils (99,1%), neuf sont des acides gras (45,7%) dont l'acide iso—palmitique (13,8%) et l'ester tri-méthylique de l'acide phényl-1,3,5 tricarboxylique (13%). Outre les acides gras et leurs esters méthyliques, les organes de la plante étudiés contiennent diverses autres classes de composés organiques volatils. Le palmier dattier, plante à grande importance économique à travers son fruit, pourrait être à travers ses organes végétatifs une source potentielle considérable de substances organiques naturelles intéressantes dans divers domaines.

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