WAC 2022 banner
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.

Contact the author

Keywords

proton NMR relaxometry – manganese

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

IMPACT OF THE WINES’ QUALITY ON THE WINE DISTILLATES’ ORGANOLEPTIC PROFILE

Brandy de Jerez (BJ) is a spirit drink made exclusively from spirits and wine distillates and is characterized by the use of casks for aging that previously contained Sherries. The quality and sensory complexity of BJ depend on the raw materials and some factors: grape variety, conditions during processing the wine and its distillation, as well as the aging in the cask. Therefore, the original compounds of the grapes from which it comes are of great interest (1 y 2) being in most cases the Airén variety. Their relationship with the quality of the musts and the wines obtained from them has been studied (3) and varies each year of harvest depending on the weather conditions (4).

Future projections for chilling and heat forcing for European vineyards

Aims: The aims of this study were: (1) to compute recent-past thermal conditions over European vineyards, using state-of-the art bioclimatic indices: chilling portions and growing degree hours; (2) to compute future changes of these thermal conditions using a large ensemble of high-resolution climate models.

Making sense of a sense of place: precision viticulture approaches to the analysis of terroir at different scales

Agriculture, natural resource management and the production and sale of products such as wine are increasingly data-driven activities. Thus, the use of remote and proximal crop and soil sensors to aid management decisions is becoming commonplace and ‘Agtech’ is proliferating commercially; mapping, underpinned by geographical information systems and complex methods of spatial analysis, is widely used…

Exploiting the diversity in spent yeast for its valorisation towards producing yeast-derived processing aids

In view of sustainability and zero-waste initiatives, the valorisation of sidestreams is a key emerging topic in the wine industry.

From vineyard to bottle. Rationalizing grape compositional drivers of the expression of “Amarone della Valpolicella” terroir

Valpolicella is a famous Italian wine-producing region. One of its main characteristic is the intensive use of grapes that are submitted to post-harvest withering. This is rather unique in the context of red wine, especially for the production of a dry red wine such as Amarone. Amarone wines produced in Valpolicella different geographic origin are anecdotally believed to be aromatically different, although there is no systematic study addressing the chemical bases of such diversity. Aroma is the product of a biochemical and technological series of steps, resulting from the contribution of different volatile molecules deriving from grapes, fermentations, and reactions linked to aging, as well as one of the most important features in the expression of the geographic identity and sensory uniqueness of a wine.