Terroir 2006 banner
IVES 9 IVES Conference Series 9 Identification of key-odorants in Sauternes Wines

Identification of key-odorants in Sauternes Wines

Abstract

The aim of the present work was to investigate Sauternes wines aromas. The flavor profiles of two wines (vintages 2002 and 2003) were investigated. Key-odorants have been determined by AEDA applied to Amberlite XAD-2 resin extracts. Various complementary techniques were used to identify the compounds (pHMB extraction, chemical synthesis of non-commercial standards, co-injections on two capillary columns, odor description at the sniffing port, GC-MS and GC-PFPD). Among key-odorants, varietal aromas (α-terpineol, linalool) and fermentation alcohols (3-methylbutanol, β-phenylethanol) and esters (ethyl butyrate, ethyl isovalerate, ethyl hexanoate) are relevant. Maturation in oak barrels provides changes in the aroma profile. Guaiacol, eugenol, vanillin, δ-nonalactone and cis-whiskylactone have a FD value ≥27 after maturation. Unreduced carbonyles such as trans-2-nonenal and β-damascenone can also be issued from oak. Polyfunctional thiols emerge as the most interesting odorants. Sotolon, previously described as characteristic of noble rot and indicator of wine oxidation, is underestimated in our XAD-2 extract. A specific extraction procedure has been therefore optimized.

Download the PDF

DOI:

Publication date: January 12, 2022

Issue: Terroir 2006

Type: Article

Authors

Sabine BAILLY, Vesna JERKOVIC and Sonia COLLIN

Unité de Brasserie et des Industries Alimentaires, Faculté d’ingénierie biologique, agronomique et environnementale, Université catholique de Louvain, Croix du Sud, 2 bte 7, 1348 Louvain-la-Neuve, Belgium

Contact the author

;

Keywords

Sauternes wines, aroma, AEDA, sotolon

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

The myth of the universal rootstock revisited: assessment of the importance of interactions between scion and rootstock

Aim‐ Rootstocks provide protection against soil borne pests and are a powerful tool to manipulate growth, fruit composition and wine quality attributes
Read More

Étude des potentialités des terroirs viticoles: une démarche globale en zone A.O.C. L’exemple des Côtes du Rhône

Depuis près d’une quinzaine d’années, l’Appellation d’Origine Contrôlée (A.O.C.) Côtes du Rhône a engagé un vaste programme afin de mieux connaître et valoriser les potentialités des différents terroirs qui la composent.

Read More

From plant water status to wine flavonoid composition: a precision viticulture approach in a Sonoma county vineyard

Plant water status of grapevine plays a critical role in affecting berry and final wine chemical composition. The environmental variabilities existing in vineyard system have significant impacts on plant water status, but it is challenging to individualize environmental factors from the temporal and spatial variabilities in vineyard. Therefore, there is need to monitor the ecophysical variation through utilizing precision viticulture tools in order to minimize the separation in berry composition. This study aims at delineating vineyard into different management zones based on plant water status explained by soil texture, and utilize differential harvest to equilibrate the final berry and wine composition.

Read More

Streamlining rootstock selection: new indices for efficiency and stability in viticulture

Grapevine rootstocks play a pivotal role in influencing scion vigor, yield, and fruit quality, making their selection critical for sustainable vineyard management.

Read More

Grapevine productivity modelling in the Portuguese Douro Region

In Portugal, and particularly in the Demarcated Region of Douro (DDR), wine production has a great tradition, producing the unique and worldwide famous Port wine as well as other remarkably good table wines. In this study the impact of projected climate change to wine production is analysed for the DDR. A statistical grapevine yield model (GYM) is developed using climate parameters as predictors.

Read More