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IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 1 - WAC - Posters 9 Water is the most abundant active compound in wine!

Water is the most abundant active compound in wine!

Abstract

Proton relaxation in model and real wines was investigated by fast field cycling NMR relaxometry. Albeit protons of wine are largely belonging to water molecules, their magnetic relaxation rates actually depend on various physico-chemical parameters related to the state of the wine and to its composition. The dominant relaxation mechanism unambiguously originates from proton interaction with paramagnetic ions naturally present in wines. This allows for gathering information on these paramagnetic ions, and in particular, manganese ion concentration, down to few tens of µg/L can be easily measured in situ. In this communication, we will further show how chemical and physical characteristics of the wine, including the oxidation level, the concentration in dissolved gas, or the viscosity can affect the proton relaxation rates, thus making water an active chemical probe of a wine properties.

DOI:

Publication date: June 27, 2022

Issue: WAC 2022

Type: Article

Authors

Philippe Bodart, Syuzanna, Esoyan, Adam Rachocki, Jadwiga Tritt-Goc, Bernhard Michalke, Philippe Schmitt-Kopplin, Thomas Karbowiak, Regis D. Gougeon

Presenting author

Philippe Bodart – UMR A 02.102 PAM Université de Bourgogne/Agrosup Dijon – Equipe Physico-Chimie de l’Aliment et du Vin (PCAV)

Univ. Bourgogne Franche-Comté, Institut Agro, UMR PAM A02.102, 1 Esplanade Erasme, 21000 Dijon, France. | Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznan, Poland. | Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznan, Poland. | Research Unit Analytical BioGeoChemistry, Department of Environmental Sciences, Helmholtz Zentrum München, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany. | Research Unit Analytical BioGeoChemistry, Department of Environmental Sciences, Helmholtz Zentrum München, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany. – Chair of Analytical Food Chemistry, Technische Universität München, Alte Akademie 10, 85354 Freising-Weihenstephan, Germany. | Univ. Bourgogne Franche-Comté, Institut Agro, UMR PAM A02.102, 1 Esplanade Erasme, 21000 Dijon, France. | Univ. Bourgogne Franche-Comté, Institut Agro, UMR PAM A02.102, 1 Esplanade Erasme, 21000 Dijon, France.

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Keywords

proton NMR relaxometry – manganese

Tags

IVES Conference Series | WAC 2022

Citation

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