 IVES 9 IVES Conference Series 9 Development of a strategy for measuring fruity aroma potential in red wine

Development of a strategy for measuring fruity aroma potential in red wine

Abstract

AIM: Levels of esters derived from substituted acids increase during the first years of aging and some of them are strongly involved in red wine fruity aromatic expression. Considering such a role, the analysis of their precursors remains indispensable. The goal of this research was to develop a method to level substituted acids, including their enantiomeric forms.

METHODS: Substituted esters and acids were analyzed by GC-MS. The development and optimization of hydroxycarboxylic acid quantitation and enantiomeric separation method consisted of: ester elimination of wine sample, acid extraction, derivatization, extraction and analysis of derivative methyl esters by GC-MS, using a Chiraldex G-TA column. The quantitation and enantiomeric distribution of substituted esters and acids were established in 31 commercial Bordeaux red wines.

RESULTS: Quantitation and enantiomeric distribution of esters and acids showed a strong positive correlation between the age of wine and levels of substituted esters and only a few correlations between acid enantiomers concentrations and age: e.g the decrease in (2R)-2-hydroxy-4-methylpentanoic acid concentration over time, for at least 20 years, may be due to esterification, leading to the increase of the corresponding ester. Variations in the ratio of substituted ethyl esters to their corresponding acids over time detected thanks to these analytical advances suggested that, in general, acids were continuously esterified during aging.

CONCLUSIONS

An assessment of the overall “aromatic potential” of these esters involved in red wine fruity aroma enhancement may be predicted, thanks to the development of the quantitation method of the corresponding acids.

DOI:

Publication date: September 14, 2021

Issue: Macrowine 2021

Type: Article

Authors

Georgia Lytra

Unité de recherche Œnologie, EA 4577, USC 1366 INRA, ISVV, Université de Bordeaux, F33882 Villenave d’Ornon France,CELINE FRANC MARGAUX CAMELEYRE JEAN CHRISTOPHE BARBE Unité de recherche Œnologie, EA 4577, USC 1366 INRA, ISVV, Université de Bordeaux, F33882 Villenave d’Ornon France

Contact the author

Keywords

fruity aroma, red wine, substituted esters and acids, precursors

Citation

Influence of viticulture on the temporary evolution of the landscape: the case of the AO Ribera del Duero (Central Spain)

The European Landscape Convention (ELC, 2001) defined the landscape as the “part of a
territory as perceived by the population and resulting from the action of natural and/or human factors and their interrelationships”. Wine landscapes, protected or not under figures such as cultural landscapes or Cultural heritage, are a clear demonstration of this definition, denoting the interrelationships of the natural
environment and the action of the human, which modulates the territory to give the different wine
landscapes. This work was focused on the study of the effect of the human factors linked to the cultivation of the vine on the modification of the landscape.

Market analysis of Chilean Pinot noir, Carménère, and Cabernet-Sauvignon wines: A comparative study of chemical parameters across low, medium, and high price segments

Wine quality is a complex concept determined by multiple factors, including vineyard management, winemaking operations, and the sensory perception of key attributes.

SIP and save the planet: a sensory and consumer exploration of australian wines made from potentially drought-tolerant white wine grapes

In order to attenuate the effects of climate change on the ability to cultivate quality wine grape vines in Australia, it is essential to adapt to the projected less favourable Australian climate scenarios. One response may be to convert a portion of the current grapevine plantings to those varieties that demand less water and can tolerate increased heat. This investigation aimed to (i) generate sensory profiles and (ii) obtain knowledge about Australian wine consumers’ preferences and opinions of Australian wines made from potentially drought tolerant, white wine grape varieties not traditionally cultivated in Australia. A Rate-All-That-Apply (RATA) sensory panel (n = 49) generated sensory profiles of 44 commercial white wines made from 7 different white grape varieties (Arinto, Fiano, Garganega, Greco, Verdejo, Verdelho and Vermentino), plus two benchmark examples each of an Australian Riesling, Pinot Gris and Chardonnay wine.

Sélection génétique des variétés originelles d’Arménie, berceau de la viticulture mondiale

Armenia, a small country in the South of the Caucasus, has been rediscovering its wine-growing past since the discovery in 2007 of archaeological wine-growing remains dating back around 8,000 years. They are among the oldest in the world. Despite a great diversity of grape varieties, Armenian winegrowers did not have sufficiently organized genetic collections to produce plants and satisfy the growing demand for planting.

Evaluation of state of vineyards and characterization of vineyard sites of the integrated area of Tokaj Kereskedőház ltd. in Tokaj region

The Tokaj Kereskedőház Ltd. is the only state owned winery in Hungary. The company is integrating grapes for wine production from 1100 hectares of vineyard, which consist of 3500 parcels with average size of 0,3 hectares, owned by about 500 families of the region. The vineyards are unevenly spread in total 27 village of Tokaj region.