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…

Yeast mannoprotein characterization and their effect on Oenococcus oeni and malolactic fermentation

Mannoproteins are released at the end of alcoholic fermentation due to yeast autolysis [1]. It has been described a positive effect of these molecules on lactic acid bacteria growth [2]. The main objective of this work was the characterization of different mannoproteins extracted from active dry yeast (ADY) and the assessment of their effect on Oenococcus oeni and malolactic fermentation (MLF).

Read More

Foliar application of urea improved the nitrogen composition of Chenin grapes

The nitrogen composition of the grapes directly affects the developments of alcoholic fermentation and influences the final aromatic composition of the wines. The aim of this study was to determine the effect and efficiency of foliar applications of urea on the nitrogen composition of grapes. This study was carried out during 2023 vintage and in the Chenin vineyard located in Estacion Experimental Mendoza (Argentina). Three urea concentrations 3, 6 and 9 Kg N/ha (C1, C2, and C3, respectively) and control (T) were applied in this vineyard at veraison.

Read More

Can soil nitrate explain polyphenol and anthocyanin content in vineyard with similar available soil water regime? 

Nitrogen (N) is quite important nutrient in grapevine development and must quality, but under Mediterranean climatic conditions, available soil water (ASW) during grapevine development can also influence vigour and must quality. The aim was to determine the influence of soil nitrate (NO3-) availability on N foliar, yield, and must quality in vineyards with similar available water holding capacity (AWC). For this purpose, four cv. Tempranillo (Vitis vinifera L.) vineyards were selected. All of them are placed in Uruñuela municipality (La Rioja, Spain), separated less than 2.5 km and in a slope <1 %, in soils with similar soil chemistry properties and with similar rooting depth (ranging between 105 cm and 110 cm).

Read More

Metatranscriptomic analysis of “aszú” berries: the potential role of the most important species of the grape microbiota in the aroma of wines with noble rot

Botrytis cinerea has more than 1200 host plants and is one of the most important plant pathogens in viticulture. Under certain environmental conditions, it can lead to the development of a noble rot, which results in a specific metabolic profile, altering physical texture and chemical composition. The other microbes involved in this process and their functional genes are poorly characterised. We have generated metatranscriptomic [1,2] and DNA metabarcoding data from three months of the Furmint grape variety, representing the four phases of noble rot, from healthy berries to completely dried berries.

Read More

Effects of different soil types and soil management on greenhouse gas emissions 

Soil is important in the carbon cycle and the dynamics of greenhouse gases (CO2, CH4 and N2O). Key soil characteristics, such as organic matter content, texture, structure, pH and microbial activity, play a determining role in GHG emissions[1]. The objective of the study is to delimit different types of soil, with different soil management and to be able to verify the differences in CO2, CH4 and N2O emissions. The study was carried out in a vineyard of Bodegas Campo Viejo in Logroño (La Rioja), whose plant material is Vitis vinifera L. cv. Tempranillo.

Read More