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…

Greek and Cypriot grape varieties as a sustainable solution to mitigate climate change

Aim: The aim of this report is to present evidence on the potential of Greek and Cypriot grape varieties to serve as a sustainable solution to mitigate climate change.

Methods and Results: The work provides a review of recent works involving Greek and Cypriot varieties’ performance under high temperatures and increased dryness.

The effect of water stress deficit on ‘Xynisteri’ grapes through systems biology approaches

Cyprus is one of the very few phyloxera-free areas worldwide where the vast majority of vines are own-rooted and non-irrigated. ‘Xynisteri’ is a predominant indigenous cultivar, particularly amenable to extreme conditions such as drought and hot climate, thus rendering it appropriate for marginal soils and adverse climatic conditions. In the current work, a comparative study between irrigated (irrigation initiated at BBCH 71) and non-irrigated vines was conducted.

Exploring between- and within-vineyard variability of “Malvasia di Candia aromatica” vineyards from Colli Piacentini

Several studies demonstrated how climate and soil may be key drivers of variability at different scales.

Evolution of cabernet sauvignon wines macerated with their own toasted vine-shoots

Toasted pruning vine-shoots represent a promising new enological tool for developing wines with chemical and organoleptic high quality, allowing that the resources of the vineyard to be returned to the wine through a “circular process”.

BIOPROTECTION BY ADDING NON-SACCHAROMYCES YEASTS : ADVANCED RESEARCH ON THIS PROMISING ALTERNATIVE TO SO₂

Sulphur dioxide has been used for many years for its antimicrobial, antioxidant and antioxydasic properties in winemaking but nowadays, it is a source of controversy. Indeed, consumers are more attentive to the naturalness of their foods and beverages and the legislation is changing to reduce the total SO₂ levels allowed in wines. To limit and replace the doses of sulphur dioxide applied, winemakers can now use bioprotection consisting in live yeast addition as alternative,seems to be promising. This process, lightly used in from the food industry, allows to colonize the environment and limit the development or even eliminate undesirable microorganisms without altering the sensory properties of the product.