terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Phenolic composition profile of cv. Tempranillo wines obtained from severe shoot pruning vines under semiarid conditions

Phenolic composition profile of cv. Tempranillo wines obtained from severe shoot pruning vines under semiarid conditions

Abstract

One of the limitations of vineyards in warm areas is the loss of wine quality due to higher temperatures during the grape ripening period. In order to adapt the vineyards to these new climatic conditions, a possible solution is to delay the ripening process of the grapes towards periods with milder temperatures, by means of management practices and thus improve the quality of the fruit and the wine produced. The technique of severe shoot pruning (SSP) has proven useful in achieving this objective. This technique consists of trimming the developed primary shoots at the end of flowering, above the node number seven. The aim of this work was to evaluate the effect of SSP under drought conditions and high temperatures on the ‘Tempranillo’ wine phenolic composition compared with non-trimming vines (NT) grown under conventional practices (just winter pruning) during the 2022 season. None of the treatments were irrigated. The wines were elaborated according to traditional red wine-making method and their general and chromatic parameters were analysed. Respect to NT, the SSP treatment showed slightly lower ethanol content and significantly reduced the dry extract, pH, malic acid and potassium, total phenolic content and color intensity values. When the polyphenolic profile of wine was analysed by HPLC techniques, respect to NT wines, the SSP ones showed an increase in coumarilated anthocyanins, and a decrease in the concentration of monoglucoside anthocyanins, flavonols, phenolics acids and total anthocyanins content. In conclusion, under these study conditions (including non-irrigation, extremes temperatures and dry weather), severe pruning of the vine shoots was not effective in improving the phenolic profile of the wine. It would therefore be necessary to analyse this technique accompanied by supportive irrigation during the ripening cycle of the grapes.

Acknowledgements: This research was supported by funds from Project IB20082, the ERDF, Junta de Extremadura, AGA001 (GR21196) and Investigo Program, financed by The Recovery and Resilience Facility. The authors would like to thank Bodegas Viñas De Alange S.A. for their collaboration.

DOI:

Publication date: October 13, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Lavado N1*, Dorado M.J1, Mancha L.A1, Valdés M.E1, Uriarte D1, Guerra M.T2, Fondón-Aguilar A1, Moreno D1

1Centro de Investigaciones Científicas y Tecnológicas de Extremadura, 06187 Badajoz (España)
2Centro Universitario Santa Ana (CUSA). IX Marqués de la Encomienda, 2, 06200 Almendralejo, Badajoz

Contact the author*

Keywords

anthocyanin, flavanol, flavonol, phenolic acids

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Defoliation combined with exogenous ABA application results in slower ripening and improved anthocyanin profile

Reducing sugar accumulation in grape (Vitis vinifera L.) berries may be a way to mitigate the effect of climate change. Managing canopy and crop load is an effective way to do so, however, reducing canopy size has been demonstrated to induce undesirable effects on anthocyanins. The aim of this study was to test if an application of exogenous ABA on the grape berries of defoliated vines (⅔ of the leaves removed) can result in slower sugar accumulation while maintaining grape and wine quality. An experiment with defoliation and exogenous ABA application on directly on clusters (factorial design 2×2) was performed with ‘Tempranillo’ fruit-bearing cuttings.

Read More

Response of red grape varieties irrigated during the summer to water availability at the end of winter in four Spanish wine-growing regions: berry phenolic composition

Water availability is the most limiting factor for vineyard productivity under Mediterranean conditions. Due to the effects caused by the current climate change, wine-growing regions may face serious soil moisture conservation problems, due to the lower water retention capacity of the soil and higher soil irradiation. The aim of this work was to evaluate the effects of soil recharge irrigation in pre-sprouting and summer irrigation every week (30 % ETo) from the pea size state until the end of ripening (RP) compared to exclusively summer irrigation every week (R) in the same way that RP, on berry phenolic composition at harvest.

Read More

Sparkling wines and atypical aging: investigating the risk of refermentation

Sparkling wine (SW) production entails a two-steps process where grape must undergoes a primary fermentation to produce a base wine (BW) which is then refermented to become a SW. This process allows for the development of a new physicochemical profile characterized by the presence of foam and a different organoleptic profile.

Read More

New crossbreed winegrape genotypes cultivated under rainfed conditions in a semi-arid Mediterranean region

Traditional drought tolerant varieties such as Cabernet Sauvignon, Monastrell, and Syrah [1], have been used as parents in the grapevine breeding program initiated by the Instituto Murciano de Investigación y Desarrollo Agrario y Medioambiental (IMIDA) in 1997 [2]. This work presents the results of evaluating three new genotypes obtained from crosses between ‘Monastrell’ and ‘Cabernet Sauvignon’ (MC16 and MC80) and between ‘Monastrell’ and ‘Syrah’ (MS104), comparing their performance under conditions of water scarcity and high temperatures with that of their respective parental varieties. For this purpose, the six genotypes were cultivated under controlled irrigation conditions (60% ETc) and rainfed conditions.

Read More

Sensory profile of wines obtained from disease-resistant varieties in La Rioja

The European wine industry is facing multiple challenges derived from climate change and the pressure of different fungal diseases that are compromising the production of traditional varieties. A sustainable alternative maybe the adoption of resistant varieties.
In this study, we have evaluated the enological potential of 9 resistant varieties (5 white and 4 red varieties) in La Rioja. Microvinifications were carried out with three biological replications. Oenological parameters were very diverse with acid content varying from 2.6 g/L to 6.6 g/L.

Read More