Influence of carpophagous attack on metabolites of cork oak (Quercus suber) acorns

Abstract

Natural regeneration maintenance of cork oak remains a major concern of forest in Algeria. Faced with the deterioration of the health status of the Algerian forests, it is urgent to think otherwise. Acorn is affected by this degradation, showing a low yield and vulnerability to carpophagous attack that disrupt the regularity and abundance of acorns. In this study, metabolites (carbohydrates and lipids) on the different categories of acorns (healthy and attacked) were measured. This assay is completed by a chemical analysis of different extracts acorns by gas chromatography / mass spectrometry. The result indicates that the infestation key content metabolites acorns more at the almond at the level of the pericarp. Chemical analysis of different extracts acorns by gas chromatography / mass spectrometry identify 18 major compounds belonging to different chemical classes (aldehyds, alcohols, ketones, acids, saturated or unsaturated hydrocarbons , terpen , sesquiterpen , etc .... ) . Nonvolatile heavy fraction includes many sesquiterpen and saturated hydrocarbons (C22 to C29) and C28 and C29 polyphenols.

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