 IVES 9 IVES Conference Series 9 Under-vine cover crop: effect over glycosidic aroma precursors of Vitis vinifera L. Cv Syrah

Under-vine cover crop: effect over glycosidic aroma precursors of Vitis vinifera L. Cv Syrah

Abstract

AIM: Volatile compounds joint to aromatic precursors form the aroma of grape must that will provide a characteristic aroma to the wine. A high proportion of aromatic compounds are present in the berry in their precursor form linked to sugars. The amount of the glycosidic fraction may be influenced by many factors such as soil, climatic conditions, viticultural practises, etc. [1]. The use of cover crops is a practice that is expanding in vine culture and to study indeep the effect of this practice on the aroma of grape is required. To this end, the effects of the employment of “Zulla” as cover crop on glycosidic aromatic precursors of Shyraz grapes has been studied.

METHODS: Grape samples from vines with three different amount of cover crop (one line, two lines and four lines) and without cover crop were recolected during two harvests (2019 and 2020). Glycosidic aroma precursors fraction was extracted and hydrolized following the method proposed by Loscos et al., [2] and the aglycons were analyzsed by SPME-GC-MS following the method appliyed by Talaverano et al. [3] with modifications.

RESULTS: A total of 40 aromatic precursors were determined in the Syrah must samples analyzed. Among them, 12 terpenes, 11 norisoprenoids, 7 alcohols, 5 aldehydes and 3 acids. Significant differences were found among the precursors volatile compounds found in the different under-vine cover crop strategies tested. The employment of “Zulla” showed a positive effect in the amount of aroma precursors in the must.

CONCLUSION

The employement of “Zulla” as under-vine cover crop influences the composition in aromatic precursor present in the grape and potentially the volatile profile of the resulting wines.

DOI:

Publication date: September 7, 2021

Issue: Macrowine 2021

Type: Article

Authors

M.P. Segura-Borrego

Nutrition and Food Science Area, Faculty of Pharmacy, University of Seville, Seville, Spain.,S. Tejero, Nutrition and Food Science Area, Faculty of Pharmacy, University of Seville, Seville, Spain. B. Puerta, Agricultural and Fisheries Research and Training Institute (IFAPA), Rancho de la Merced. Jerez de la Fra. Spain. E. Valero, Department of Molecular Biology and Biochemical Engineering, University of Pablo de Olavide, Seville, Spain. M.L.Morales, Nutrition and Food Science Area, Faculty of Pharmacy, University of Seville, Seville, Spain. C. Ubeda, Nutrition and Food Science Area, Faculty of Pharmacy, University of Seville, Seville, Spain.

Contact the author

Keywords

zulla cover crop, aroma precursor, ecological crop, warm climate zone

Citation

Water recharge before budbreak and/or deficit irrigation during summer: agronomic effects on cv. Tempranillo in the D.O. Ribera del Duero

The availability of water in the soil and the water status of the vineyard are proving to be determining factors for crop management in the current context of climatic variation

Hemisynthesis, NMR Characterization and UHPLC-Q-Orbitrap /MS² identification of (+)-Catechin oxidation products in red wines and grape seed extracts

(+)-Catechin—laccase oxidation dimeric standards were hemi-synthesized using laccase from Trametes versicolor in a water-ethanol solution at pH 3.6.

Assessing bunch architecture for grapevine yield forecasting by image analysis

It is fundamental for wineries to know the potential yield of their vineyards as soon as possible for future planning of winery logistics. As such, non-invasive image-based methods are being investigated for early yield prediction. Many of these techniques have limitations that make it difficult to implement for practical use commercially. The aim of this study was to assess whether yield can be estimated using images taken in-field with a smartphone at different phenological stages.

Impact of electrolyzed water applied as an alternative treatment in vineyard on grape and wine quality

The main issues in viticulture are to highly decrease the use of phytochemicals. Electrolyzed water (EW) is one of the possible alternative when illness pressure is not too high

Cover crops under-vine impact on grapevine performance and vineyard soil microorganisms is highly affected by edaphoclimatic conditions at a regional scale

Soil management through cover crops can influence the cycle of nutrients, promote water infiltration, decrease erosion, and enhance the soil microbiota biodiversity, improving the grapevine performance. However, the area under the vines tends to be left bare by applying herbicides or tillage to avoid competition with the crop in semi-arid climates. Use of covers under-vine might be an alternative to these practices aiming at grapevine quality and soil health improvement. The aim of this research was to study the implications of soil management under the vines (cultivation and cover crops) on growth, yield, berry composition and soil microbial communities. A cover crop composed by a mixture of legumes was sown and compared with a control (cultivation), which includes frequent tillage to keep the soil bare, in three areas characterized by different edaphoclimatic conditions in the region of Navarra.