terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Crown procyanidin quantification in red wines, rosé wines and Port wines

Crown procyanidin quantification in red wines, rosé wines and Port wines

Abstract

Condensed grape tannins play a major role in the organoleptic properties and quality of red wine. Recently, a new sub-family of macrocyclic condensed tannins has been identified in red wine and named “crown tannins”. Indeed, the first compound of the family identified and characterised by NMR was the crown procyanidin tetramer which is composed of a macrocyclic structure composed of four (-)-epicatechins link together by B-type interflavanoid linkage in the following an alternative sequences of C4-C8 and C4-C6 linkage. The 3D structure of this unusual crown procyanidin family reveals a central cavity in the molecule [1]. Moreover, this crown procyanidin tetramer has a very specific physicochemical characteristics and properties compared with non-cyclic condensed tannins [2]. Apart from the procyanidin tetramer, many other crown tannins have been detected by UPLC-UV-QTof, such as galloylated tetramers and pentamers. Moreover, recent study showed that these molecules are specifically located in grapes skin and their concentration in red wine depends of the grape varieties.

Thus following or previous work regarding the validation of a quantification method by UPLC-UV-QTof, the evolution kinetics of crown procyanidins family (tetramer, galloylated tetramer and pentamer) during wine aging in bottles over multiple vintages has been investigated. This evolution kinetic has been investigated in various wine matrices, such as red wine, rosé wine and port wine, in order to gain a better understanding of their evolution and impact in the various colloidal matrices. Moreover, this evolution kinetics has been compared with non-cyclic condensed tannins.

References:
1) Zeng, L.et al. (2019) Crown Procyanidin Tetramer: A Procyanidin with an Unusual Cyclic Skeleton with a Potent Protective Effect against Amyloid-β-Induced Toxicity. Molecules, 24: 1915, DOI 10.3390/molecules24101915

2) Jouin A et al. (2022) Evolution of the Crown Procyanidins’ Tetramer during Winemaking and Aging of Red Wine. Foods, 11: 3194. DOI10.3390/foods11203194

DOI:

Publication date: October 16, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Ferreira M. 1*., Teissedre PL.1, Jourdes M. 1

1 University Bordeaux, Bordeaux INP, Bordeaux Sciences Agro, INRAE, UMR 1366, OENO, ISVV F‐33140 Villenave d’Ornon, France

Contact the author*

Keywords

wines, condensed tannins, crown tannins, UPLC-UV-QTof

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Genetic variation among wild grapes native to Japan

Domesticated grapes are assumed to have originated in the Middle East. However, a considerable number of species are native in East Asian countries such as China, Korea and Japan as well. Evidence suggests that a total of seven species and eight varieties have been found to be native to Japan. A wide level variation in morphology, genetic and fruit composition exist in wild grape native to Japan.

Read More

Sparkling wines and atypical aging: investigating the risk of refermentation

Sparkling wine (SW) production entails a two-steps process where grape must undergoes a primary fermentation to produce a base wine (BW) which is then refermented to become a SW. This process allows for the development of a new physicochemical profile characterized by the presence of foam and a different organoleptic profile.

Read More

Effect of irrigation in cover cropping vineyards

Cover cropping in vineyard is a sustainable and alternative soil management system to conventional tillage that is gaining more and more importance among winegrowers and is being promoted, among other organizations, by the European Union through the eco-schemes of the Common Agricultural Policy.
However, the use of cover crops in Mediterranean viticultural environments is conditioned, to a large extent, by the availability of irrigation water which, in a context of global warming like the one we are experiencing, must be adjusted to savings strategies, supplying to the vine only what it needs in each moment.

Read More

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison. In all solutions were added 1ml/l of Tween 80 ® surfactant.

Read More

Influence of irrigation frequency on berry phenolic composition of red grape varieties cultivated in four spanish wine-growing regions

The global warming phenomenon involves the frequency of extreme meteorological events accompanied by a change in rainfall distribution. Irrigation frequency (IF) affects the spatial and temporal soil water distribution but its effects on the phenolic composition of the grape have been scarcely studied. The aim of this work was to evaluate the effects of four deficit irrigation frequencies of 30 % ETo: one irrigation per day (T01), two irrigations per week (T03), one irrigation per week (T07) and one irrigation every two weeks (T15) on berry phenolic composition at harvest.

Read More