Macrowine 2021
IVES 9 IVES Conference Series 9 Attractiveness and sweetness of red wines: Synergies between American oak barrels and mannoproteins

Attractiveness and sweetness of red wines: Synergies between American oak barrels and mannoproteins

Abstract

In partnership with a Bordeaux property wanting to improve the quality of its second wine, the effects of two factors, American oak barrels and mannoproteins were studied. Their impact on the attractiveness and sweetness of wines were characterized during two successive vintages (2012 and 2013). Vinification took place with a homogeneous batch of Cabernet Sauvignon. The wine was then divided up into various groups of five barrels of French and American oak, new or reused. Analyses of volatile and non-volatile wood compounds were undertaken at four months and eight months of wood ageing, by LC-MS and GC-MS. Blind sensory analyses were also carried out in by an expert panel made up of 15 to 20 tasters. The first part of the study explores the impact of the type of wood used during ageing on a red wine, particularly as regarding the attractiveness and sweetness perceived during sensory analysis. The second part examines the influence of adding mannoproteins when ageing wine in barrels made of various oak species. The chemical analyses showed that the wine kept in American-oak barrels had concentrations of Cis-whiskylactone and Vanillin significantly higher than that measured for the corresponding French-oak barrels. The sensory analyses showed that the wine aged in American barrels was significantly more attractive and sweet than that aged in French-oak barrels. At the end of ageing, the sample aged in American oak only earned 20% of votes as the most attractive and as the sweetest wine while the addition of mannoproteins nearly tripled the frequency of citations (55% for attractiveness and 33% for sweetness). The same was true, to a lesser extent, for the wine aged in reused American barrels

Publication date: May 17, 2024

Issue: Macrowine 2016

Type: Poster

Authors

Anne-Charlotte Monteau*, Vincent Renouf

*Chêne & Cie

Contact the author

Tags

IVES Conference Series | Macrowine | Macrowine 2016

Citation

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