Terroir 2016 banner
IVES 9 IVES Conference Series 9 How climate change can modify the flavor of red Merlot and Cabernet-Sauvignon

How climate change can modify the flavor of red Merlot and Cabernet-Sauvignon

Abstract

The main goal of this research was to identify key aroma compounds linked with the maturity of grapes (ripe and overripe) and involved in grapes and wines with an intense dried fruits aroma. Odoriferous zones reminiscent of these aromas were detected by gas chromatography coupled with olfactometry (GC-O). Three odoriferous zones were identified (OZ1, OZ2, OZ3). Using GC-MS with chemical standards, they were identified as (Z)-1,5-octadien-3-one (geranium), furaneol (caramel) and γ-nonalactone (coconut, cooked peach), respectively. Studies of their sensory properties and quantitative assays by GC-MS (EI/CI) in musts and wines were performed.

Furaneol and γ-nonalactone are well-known compounds in wines but have only rarely been reported in musts. On the contrary, the influence of (Z)-1,5-octadien-3-one on the aroma of must is reported for the first time. The perception threshold of this ketone in must is 1.2 ng/L and its concentration can exceed 200 ng/L in overripe merlot grapes. High concentrations of furaneol and γ-nonalactone were detected in musts and young red wines marked by dried fruit flavors. We also report the first results concerning the incidence of harvest date of Cabernet-Sauvignon grapes on the aromas and fine composition of musts and wines.

DOI:

Publication date: June 24, 2020

Issue: Terroir 2016

Type: Article

Authors

Lucile ALLAMY (1,2), Philippe DARRIET (2) and Alexandre PONS (2,3)

(1) Château Latour, Saint-Lambert, 33250 Pauillac, France.
(2) Université de Bordeaux, ISVV, EA4577, Unité de recherche OENOLOGIE, F-33882 Villenave d’Ornon, France. 3Seguin Moreau, Z.I. Merpins, B.P. 94, 16103 Cognac, France

Contact the author

Keywords

flavor, red wines, grapes, maturity, over ripening

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Le zonage viticole en Italie. État actuel et perspectives futures

Over the past few decades, viticultural research has made numerous contributions which have made it possible to better understand the behavior of the vine as well as its response to the conditions imposed on it by the environment and agronomic practices. However, these results have only rarely been used in the practical management of vineyards because the research has been carried out using partial experimental models where reality is only represented by a few factors which are sometimes even made more complex by the introduction of elements foreign to the existing situation and difficult to apply to production (varieties, methods of cultivation, management techniques, etc.). To these reasons, one could add a low popularization of the results obtained, as well as the difficulty of implementing the scientific contributions, which does not allow the different production systems to fully express their potential. This limit of viticultural research can only be exceeded by the design of integrated projects designed directly on and for the territory. Indeed, only the integrated evaluation of a viticultural agro-system, which can be achieved through zoning, makes it possible to measure, or even attribute to each element of the system, the weight it exerts on the quality of the wine.

Towards the definition of a detailed transcriptomic map of grape berry development

In the last years the application of genomic tools to the analysis of gene expression during grape berry development generated a huge amount of transcriptomic data

Chitosan from mushroom by-products: sustainable extraction process and winemaking application

Chitosan is a biopolymer industrially obtained from the deacetylation of chitin, the second most abundant polysaccharide on earth, after cellulose. It is extracted from various terrestrial and marine resources, including insects, grasshoppers, shrimps, crabs, lobsters, squids, and fungi. chitosan has a polycationic character due to the free amine groups along its chemical backbone, and depending on its deacetylation degree (DD) and molecular weight (MW), it shows variable properties that differ from those of other natural polysaccharides.

Analisi delle modalita’ d’interazione tra conoscenza dl un territorio e gestione dei suoi aspetti enoturistici relativamente ad una regione (Toscana)

Il Turismo negli anni 2000 si appresta ad essere la più vasta ed estesa impresa presente nel mondo. Se a cio si aggiunge il fatto che il tempo libero risulta essere, per la maggior parte delle persone, la principale aspirazione da considerare ben oltre il proprio benessere eco­nomico, ci si rende conto del perché di una crescente domanda di ecoturismo. Un viaggiare sempre più accorto aile valenze ambientali e tipiche di un territorio.

Il vino nobile di Montepulciano

C’è grande attenzione al rapporto tra zonazione e marketing. Mi sembra però che ci sia anco­ra oggi un salto fra le pratiche di analisi del terreno e di deterrninazione di quello che potremo definire “cru” e quello che può essere la sua utilizzazione rispetto ai consumatori finali.