HASTOY, Xavier; FRANC, Céline; VALLS FONAYET, Josep; LISANTI, Maria Tiziana; RIQUIER, Laurent; SEGUR, Marie-Claude; FERMAUD, Marc; DE REVEL, Gilles

doi:10.1016/j.foodchem.2024.142632

HASTOY, Xavier
Unité de Recherche Œnologie [Villenave d'Ornon] [OENO]

FRANC, Céline
Unité de Recherche Œnologie [Villenave d'Ornon] [OENO]

VALLS FONAYET, Josep

Unité de Recherche Œnologie [Villenave d'Ornon] [OENO]

Langue

Article de revue

Ce document a été publié dans

Food Chemistry. 2024-12, vol. 471

Résumé en anglais

A varietal origin of eugenol was previously demonstrated in Baco blanc, a major grapevine variety used to produce Armagnac wine spirits. Eugenol was found in high amount, both as the free and as unidentified glycosylated forms. To reveal their identity, a specific method was developed and applied to berry skin extracts. This EPIQ (Extraction-Purification-Identification-Quantification) procedure comprised HS–SPME GC–MS-guided LC fractionation, combined with specific enzymatic hydrolyses as well as LC–MS/MS and LC–HRMS analyses. Comparison with commercial standards allowed for the identification of geoside (eugenyl-6-O-α-L-arabinopyranosyl-b-D-glucopyranoside) as a major eugenol precursor. This is the first study to find geoside in grapevine. Three minor eugenol precursors were also putatively determined, including the monoglucoside, citrusin C. Two other diglycosides of eugenol were also hypothesised. LC–MS/MS quantifications confirmed presence of a larger amount of geoside in Baco blanc than in Vitis vinifera grapes. Geoside reach a maximum concentration in berry skins of Baco blanc at veraison.< Réduire

Mots clés en anglais

Armagnac

Citrusin C

Geoside

Glycoconjugates

Grape Berry

URI

https://oskar-bordeaux.fr/handle/20.500.12278/206026

DOI

http://dx.doi.org/10.1016/j.foodchem.2024.142632

Project ANR

Développement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation - ANR-11-INBS-0010

Unités de recherche

Oenologie - UMR 1366

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Disclosure of the nature of glycosylated varietal precursors of eugenol from the hybrid, tolerant grapevine variety Baco blanc: Methodology and quantification