Terroir 1996 banner
IVES 9 IVES Conference Series 9 Méthode et outils de valorisation des terroirs en cave coopérative

Méthode et outils de valorisation des terroirs en cave coopérative

Abstract

[English version below]

Depuis le début des années 90, les vignerons des Caves Coopératives de l’Appellation “Côtes du Rhône” se sont penchés, au sein des structures de réflexion du Syndicat Général, sur deux axes de réflexion:
– Détermination des critères de sélection et de rémunération différenciée des apports de vendange;
– Organisation des sélections de vendanges sur la base des terroirs afin d’augmenter quantitativement le potentiel de sélection au sein de l’unité de production.
Une étude conjointe de ces deux axes de préoccupations a conduit le service technique de l’A.O.C. à mettre au point une méthodologie de caractérisation des apports de vendange à la parcelle ainsi qu’à la réception au chai de vinification qui permette d’optimiser quantitativement par une meilleure organisation et qualitativement par une adéquation du processus de vinification aux caractéristiques de la matière première, sa transformation et sa commercialisation. Un logiciel a été conçu et développé spécifiquement pour la mise en œuvre de la méthodologie.
Cette démarche qui permet une véritable transparence entre l’amont viticole et la valorisation au sein de l’unité de vinification peut constituer un outil très efficace dans le cadre d’une démarche de certification d’entreprise.

Since the beginning of the decade, the wine-growers of the AOC Côtes du Rhône cooperatives have concentrated through their Syndicates development committee, on two main areas of research:
– Identification of criteria for the selection of grapes and a sliding scale of remuneration according to the quality of the transportation of the harvest.
– Organization of harvest selection based upon the concept of terroir, so as to increase on a quantitative level, the options for selection at the heart of the production site.
Research on these two important themes has led the AOC technical division to divide a method for assessing harvest transport both in the vineyard and at the vinification site. This will permit better winemaking and marketing, on a qualitative level by ensuring the best vinification methods are used for the grapes concerned, and on a quantitative level, through better organization.
A computer programme has been specifically designed for the development of this method. This process allows complete transparency between vineyard and vinification center and may constitute a highly effective tool for a company wishing to obtain certification of their products.

DOI:

Publication date: March 2, 2022

Issue: Terroir 1998

Type: Article

Tags

IVES Conference Series | Terroir 1998

Citation

Related articles…

Chemical activation of ABA signaling in grapevine through ABA receptor agonists

Grapevine (Vitis vinifera) and its derived products, in terms of cultivated area and economic volume, constitute the most relevant fruit crop in the world (7.5 million cultivated hectares). In the current context of climate change, the wine sector faces unprecedented challenges to satisfy a growing demand for wines of greater quality through sustainable viticulture. Global warming threatens quality wine production in Mediterranean wine regions in particular. The increase in heatwaves and drought episodes accelerate the vine phenology and alter the ripening and composition of grapes and wine. Extreme abiotic stress episodes compromise grape production and plant survival, intensifying the pressure on the use of limited resources like water. Abscisic acid (ABA) is an important hormone in the ripening of certain fruits and in plant response to abiotic stress.

PHOTOCHEMICAL DEGRADATION OF TRYPTOPHAN IN MODEL WINE: IMPACT OF HEAVY METALS AND OXYGEN ON 2-AMINOACETOPHENONE FORMATION

The wine industry worldwide faces more and more challenges due to climate change, such as increased dryness in some areas, water stress, sunburn and early harvesting during hot summer temperatures¹. One of the resulting problems for the wine quality might be a higher prevalence of the untypical aging off-flavor (ATA)². A substance, which Rapp and Versini made responsible for ATA, is the 2-aminoace-tophenone (2-AAP)³. 2-AAP in wine causes a naphthalene, wet towels, wet wool, acacia flower or just a soapy note⁴.

Drought effect on aromatic and phenolic potential of seven recovered grapevine varieties in Castilla-La Mancha region (Spain)

The effects of climate change are seriously affecting the quality of wine grapes. High temperatures and drought cause imbalances in the chemical composition of grapes. The result is overripe grapes with low acidity and high sugar content, which produce wines with excessive alcohol content, lacking in freshness and not very aromatic. As a consequence, the search of varieties with capacity of produce quality grapes in adverse climate conditions is a good alternative to preserve the sustainability of vineyards. In this work, quality parameters of seven Vitis vinifera L. cultivars (five whites and two reds) recently recovered from extinction and grown under two different hydric regimes (rainfed and irrigated) were analyzed during the 2020 vintage. At harvest time, weight of 100 berries, must physicochemical parameters (brix degree, total acidity, malic acid, pH), and carbon and oxygen isotope ratios (δ13C, δ18O) were determined. Subsequently, varietal aroma potential index (IPAv) and total polyphenol index (TPI) were analyzed. Quality parameters, IPAv and TPI, showed significant differences between varieties and water regimes. Both red varieties, Moribel and Tinto Fragoso, stood out for their high aromatic and phenolic potential, which was higher under rainfed regime. Regarding to white varieties, Montonera del Casar and Jarrosuelto stood out in terms of varietal aroma potential. Montonera del Casar high acidity in its musts and Jarrosuelto showed the highest berry weights.

Biotic and abiotic factors affecting physiological aspects underlying vegetative vigour in two commercial grapevine varieties

Grapevine vigour, defined as the propensity to assimilate, store and/or use non-structural sugars for allowing fast growth of shoots and producing large canopies[1], is crucial to optimize vineyard management. Recently, a model has been proposed for predicting the vigor of young grapevines through the measurement of the vegetative growth and physiological parameters, such as water status and gas exchange[2]. Our objectives were (1) to explore the influence of the association of two grapevine varieties (Tempranillo and Cabernet Sauvignon, grafted onto R110 rootstocks) with arbuscular mycorrhizal fungi (AMF) on the vegetative vigour of young plants; and (2) to assess the effect of environmental factors linked to climate change on the vegetative vigour of Cabernet Sauvignon.

Aroma profile of Oenococcus oeni strains in different life styles

AIM: Three Oenococcus oeni strains previously isolated from spontaneous malolactic fermentation were characterized for their surface properties. Planktonic and sessile cells were investigated for aroma compounds production and the expression of genes involved in citrate and malate metabolism (citE and mleA, respectively), glycoside-hydrolase (dsrO), fructansucrase (levO), rhamnosyl-transferase (wobB), glycosyltransferase (wobO).