Macrowine 2021
IVES 9 IVES Conference Series 9 Impact of cover crop in vineyard on the musts volatile profile of Vitis vinifera L. Cv Syrah

Impact of cover crop in vineyard on the musts volatile profile of Vitis vinifera L. Cv Syrah

Abstract

Grape aromatic characteristics are very important for the production of quality wines. The concentrations of volatile compounds in grape berries from vines with cover crops have been scarcely studied. For this reason, the aim of this work was to evaluate the influence of “Zulla” cover crop on the volatile profiles of organically grown Shyraz variety grapes. For this purpose, volatile profiles of grapes obtained from vines with three different amount of cover crop (one line, two lines and four lines) and without cover crop, over two harvests (2019 and 2020) were determined. The grape samples came from Jerez a warm climate zone. Must volatile compounds were determined by sequential sorptive extraction with Twisters by immersion (SBSE) and headspace (HSSE), followed by GC-MS analysis [1]. A total of 159 compounds were determined and, most of them were influenced by the presence of cover crop. The amount of methyl ester was directly correlated with the amount of “Zulla” cover crop. The results of principal component analysis (PCA) showed that PC1 grouped the samples according harvest and PC2 according to amount of cover crop, separating clearly the samples obtained without cover crop, in both harvests. It was observed a reduction of free volatile compounds when the amount of cover crop applied increased, in both harvests. Then, cover crop had an effect over volatile profile of Shyraz grapes.

DOI:

Publication date: September 7, 2021

Issue: Macrowine 2021

Type: Article

Authors

Eva Valero

Nutrition and Bromatology Area, Department of Molecular Biology and Biochemical Engineering, University Pablo de Olavide, Seville, Spain.,F. Arranz, Nutrition and Bromatology Area, Department of Nutrition and Bromatology, Toxicology and Legal Medicine, Faculty of Pharmacy, University of Seville, Seville. Spain. B. Puertas, Agricultural and Fisheries Research and Training Institute (IFAPA), Rancho de la Merced. 11407, Jerez de la Fra. Spain. M.L. Morales, Nutrition and Bromatology Area, Department of Nutrition and Bromatology, Toxicology and Legal Medicine, Faculty of Pharmacy, University of Seville, Seville. Spain

Contact the author

Keywords

zulla cover crop, free volatile compounds, ecological crop

Citation

Related articles…

Partial rootzone drying (PRD): strategic irrigation management as viticultural tool affecting plant physiology and berry quality

Partial rootzone drying (PRD) is an irrigation management technique designed to reduce water use in grapevines without a decline in yield, thereby increasing water use efficiency (WUE). The principle of PRD is to keep part of the root system at a constant drying rate to produce soil derived signals to above-ground plant organs to induce a

Characterization of “territoires” throughout the production of wines obtained with withered grapes: the cases of “Terra della Valpolicella” (Verona) and “Terra della Valle del Piave” (Treviso) in Northern Italy

Dans la définition et la description d’un “territoire” (“terra” en italien), avec les facteurs du milieu et génétiques, un rôle important est joué par ceux agronomiques, techniques et de culture qui contribuent à caractériser le produit d’une zone spécifique.

VOLATILE AND GLYCOSYLATED MARKERS OF SMOKE IMPACT: LEVELS AND PATTERNS OBSERVED IN 2020 WINES FROM THE UNITED STATES WEST COAST

Smoke impact in wines is caused by a wide range of volatile phenols found in wildfire smoke. These compounds are absorbed and accumulate in berries, where they may also become glycosylated. Both volatile and glycosylated forms eventually end up in wine where they can cause off-flavors, described as “smoky”, “bacon”, “campfire” and “ashtray”, often long-lasting and lingering on the palate. In cases of large wildfire events, economic losses for all wine industry actors can be devastating.

Vitamins in grape must: let’s lift a corner of the veil

Although vitamins stand as major actors to yeasts prime metabolic pathways, their significance in oenology and winemaking remains rather obscure nowadays, having been mostly unexplored for several decades.

INTEGRAPE guidelines and tools: an effort of COST Action CA17111

INTEGRAPE was a European interdisciplinary network for “data integration to maximize the power of omics for grapevine improvement” (CA17111, https://integrape.eu/), funded by the European COST Association from September 2018 to 2022. This Action successfully developed guidelines and tools for data management and promoted the best practices in grapevine omics studies with a holistic future vision of: “Imagine having all data on grapevine accessible in a single place”.