Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Key odorants of french syrah wines from the northern rhone valley

Key odorants of french syrah wines from the northern rhone valley

Abstract

Little research has been undertaken to investigate the main contributors to the aroma of Syrah wines from the cool northern part of the Rhone valley despite the historical importance of this cultivar for this wine region. The aim of the present work was to study the key odorants of Crozes-Hermitage wines made from two vintages with distinct climatic conditions (cool in 2013, warm in 2015) using supercritical CO2 dearomatized (sCO2) wine as a matrix for reconstitution studies, and the Pivot profile sensory method for omission tests. The volatile composition of the two wines was first assessed through determination of 76 molecules. Then, the impact of four matrices (synthetic wines with 10% and 12.5% of ethanol, and dearomatized native wines through rotary evaporation or using sCO2) on the quality of the reconstitution was investigated. For both vintages, 35 molecules with OAV > 0.5 were identified in both wines, with rotundone and 3-sulfanylhexanol (3SH) enabling the strongest discrimination between the two vintages. Wine dearomatized using sCO2 was identified as the best matrix. The best models built using this matrix were composed of aroma compounds with OAV > 5 and OAV > 10 highlighting that this dearomatization approach can be valuable to reconstitute the aroma of wine using a small number of molecules. For the 2013 wine, the omission of rotundone and 2-furfurylthiol had the greatest impact on the olfactive profile for non-anosmic and anosmic panelists to rotundone, respectively. 3SH, whose omission decreased the rating of the “fruity” attribute, was identified as the main contributor to the aroma of Syrah wine produced in 2015.

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

Olivier GEFFROY1*, Marie MORÈRE2, Grégory PASQUIER1, Ricardo LOPEZ3 and Jean-Stéphane CONDORET4

1PPGV, Université de Toulouse, INP-PURPAN, 75 voie du TOEC, 31076 Toulouse Cedex 3, France
2CRITT GPTE, 4 Allée Émile Monso, 31030 Toulouse cedex 4, France
3LAAE, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
4LGC, UMR CNRS 5503, 4 Allée Émile Monso, 31030 Toulouse cedex 4, France

Contact the author

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

Exploring the plasticity of the grapevine drought physiology

Grapevine response to water deficit has been extensively studied. Nevertheless, debate still exists regarding some physiology adoption under drought

Caractérisation des relations hydriques sol/vigne dans un terroir languedocien

Par le fait d’une politique agricole communautaire axée sur des objectifs de qualité des produits, la recherche et l’identification des critères de cette qualité deviennent impératives. En viticulture, la notion de qualité du produit est rattachée au concept théorique de «terroir». Ce terme englobe un ensemble de paramètres du milieu (géologie, sol, climat) influant sur la récolte.

Qualitative modelling of factors influencing the development of Black rot, for the prediction of damage to bunches

Vines are one of the most pesticide-intensive crops in France, and reducing their use is a major challenge for both the environment and human health.

Adsorption of tetraconazole by organic residues and vineyard organically-amended soils 

Spain is the country with the largest wine-producing area in the EU and its productivity is largely controlled applying fungicides. However, residues of these compounds can move and contaminate surface and groundwater. The objective of this work was to evaluate the capacity of bioadsorbents from different origin to adsorb and immobilize tetraconazole by themselves or when applied as organic soil amendment, and to prevent soil and water contamination by this fungicide. The adsorption of tetraconazole by 3 organic residues: spent mushroom substrate (SMS), green compost (GC) and vine pruning sawdust (VP), as well as by vineyard soils unamended and amended individually with these residues at 1.5% (w/w) was evaluated using the batch equilibrium technique.

Differentiation and characterization of Spanish fortified wines with protected designation of origin based on volatiles using multivariate approaches

Spain is one of the main producers of high-quality fortified wines. Particularly some of them elaborated in Andalusia have acquired a great prestige for being unique due to their production in a specific geographical area with traditional methods, the grape variety used, the climate and the soil. Such is their distinguishing feature achieved that they have been protected by the European Union with the indication “Protected Designation of Origin” (PDO). Thus, there are four PDO of fortified wines in Andalucía (‘Condado de Huelva’, ‘Jerez Xérès Sherry’, ‘Manzanilla Sanlúcar de Barrameda’, and ‘Montilla-Moriles’). Furthermore, within each PDO,there are different categories according to their particular characteristics and winemaking conditions such as the aging process.