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LE STUDIUM Loire Valley Institute for Advanced Studies

Prof Régis Gougeon - Messages in a bottle: from oenolomics to the structural resolution of the transient chemistry of wine aging


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Prof Régis Gougeon - Messages in a bottle: from oenolomics to the structural resolution of the transient chemistry of wine aging

Metabolomics applied to vine and wine sciences, has significantly developed over the last ten years. To that respect, high-resolution mass spectrometry has clearly shown unprecedented capability based on ultra-high resolving power and mass measurement accuracy. The introduction of the concept of oenolomics, exemplified by the metabologeography expression of cooperage oak wood in bottle-aged wines, further paved the way for breakthrough investigations of specific chemical fingerprints of wines, considered as transient molecular memories of vineyard-related environmental parameters and/or enological practices, which may have driven their original composition. We thus reported a remarkable and straightforward discrimination of wines according to either the level of SO2 added to the must at pressing, or the type of stopper used at bottling, the latter being directly correlated to distinct oxygen ingresses during ageing. Through some examples, we will show how high-resolution MS can decipher the extent of the yet-unknown chemistry of wines or spirits. We will show in particular how sets of combined analytical strategies involving molecular and physico-chemical approaches can bring unprecedented molecular signatures of dry white wines antioxidant metabolome.

 

 


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    Date de réalisation : 3 Décembre 2020
    Durée du programme : 46 min
    Classification Dewey : Chimie et sciences connexes
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    Catégorie : Conférences
    Niveau : Tous publics / hors niveau
    Disciplines : Chimie
    Collections : Exploring the molecular diversity of grape, a source of natural ingredients
    ficheLom : Voir la fiche LOM
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    Langue : Anglais
    Mots-clés : chimie, molécule
    Conditions d’utilisation / Copyright : LE STUDIUM
 

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