IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Vitamins in grape must: let’s lift a corner of the veil

Vitamins in grape must: let’s lift a corner of the veil

Abstract

Although vitamins stand as major actors to yeasts prime metabolic pathways, their significance in oenology and winemaking remains rather obscure nowadays, having been mostly unexplored for several decades. While those investigations allowed for a primary estimation of the vitaminic contents of musts and wines, no quantification of their vitameric distribution has ever been performed. Here, in order to elucidate a still-obscure facet of wine composition, 19 different vitamers from 8 different vitaminic groups (B1, B2, B3, B5, B6, B8, B9, C) have been simultaneously and directly analyzed by an optimized rapid HPLC procedure in 85 white grape musts from different geographical origins, varieties, as well as vintages. This novel insight on must composition reflects the overall must diversity, since their vitameric contents vary highly between musts. Plus, this investigation provided leads for characterization of the matrix, since, notably, distinctive patterns could be observed in regards to the musts area of cultivation. Such an analytical tool allows for a precise estimation of the must contents in the different water-soluble vitamers, to provide with a
refined management of winemaking and avoid significant deficiencies that could occur during fermentation, or as a result of winemaking practices. As such, the impact held by some oenological practices on vitamins has also been investigated, and proved to have no significant effect. Overall, this offers ground for further determination of the vitamin significance in oenology, and provide a new tool for alcoholic fermentation management.

DOI:

Publication date: June 23, 2022

Issue: IVAS 2022

Type: Article

Authors

Evers Marie Sarah1,2, Alexandre Hervé1, Morge Christophe2, Sparrow Celine2, Gobert Antoine2 and Roullier-Gall Chloé1

1Institut Universitaire de la Vigne et du Vin Jules Guyot, Université de Bourgogne, 2 rue Claude Ladrey, 21000 Dijon, France
2Sofralab SAS, 79 avenue A.A, Av. Alfred Anatole Thévenet, 51530 Magenta, France

Contact the author

Keywords

vitamins, grape must, HPLC, oenology, winemaking

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Towards the understanding of wine distillation in the production of brandy de Jerez. Chemical and sensory characterization of two distillation methods: continuous and batch distillation

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 being in most cases the Airén variety. Their relationship with the quality of the musts and the wines obtained from them has been studied (1) and varies each year of harvest depending on the weather conditions (2).

Read More

From the current probabilistic approach to a deterministic production process, a clear step towards digital transformation in the wine sector

Currently, to consistently ensure the maintenance of a wine-style while benefiting from the utmost rigor made possible by the winemaking process, the composition of the wine blend is made using sensory control. This is performed after the wine is made with no real possibility of deterministic intervention.

Read More

Genotypic differences in early-stage root architectural traits and consequences for water uptake in three grapevine rootstocks differing in drought tolerance

Root architecture (RSA), the spatial-temporal arrangement of a root system in soil, is essential for edaphic resources acquisition by the plant, and thus contributes largely to its productivity and adaptation to environmental stresses, particularly soil water deficit. In grafted grapevine, while the degree of drought tolerance induced by the rootstock has been well documented in the vineyard, information about the underlying physiological processes, particularly at the root level, is scarce, due to the inherent difficulties in observing large root systems in situ. The aims of this study were (i) to determine the phenotypic differences in traits related to root distribution and morphology along the substrate profile in different Vitis rootstocks during early growth, (ii) to assess the plasticity of these traits to soil water deficit and (iii) to quantify their relationships with plant water uptake.

Read More

Regenerative agricultural winegrowing systems play a role in refining the expression of terroir in the pacific coast region of United States and Canada

By definition, Regenerative Agricultural Systems seek to promote soil and plant health by using photosynthesis for the removal and retention of atmospheric carbon dioxide into stable soil carbon.

Read More

Phenolic extraction during fermentation as affected by ripeness level of Syrah/R99 grapes

L’extraction phénolique au cours de la fermentation à partir de vendanges de différents degrees de maturité du cépage Syrah/R99 a été etudiée. Cette travail fait parti d’un projet focalisé sur la qualité du raisin et des vins obtenus au cours du millésime 2002. Les vignes sont situées à Stellenbosch (Afrique du Sud) sur un sol Glenrose

Read More