Terroir 2008 banner
IVES 9 IVES Conference Series 9 Influence of the year and the environmental factors on condensed tannins from Cabernet franc grapes

Influence of the year and the environmental factors on condensed tannins from Cabernet franc grapes

Abstract

The composition in condensed tannins of the grape berries is essential for the quality of the harvest. Proanthocyanidins have a significant influence on the organoleptic properties of the red wines.
The influence of the environmental factors on the Cabernet franc composition in condensed tannins was studied in Saumurois and Touraine. For 3 years, a network of 14 plots was conducted in an identical way in terms of viticultural management. The biochemical composition of the berries was analysed, in particular for the condensed tannins, by RP-HPLC after fractionation and thiolysis.
The results showed that the type of soil did not discriminate the plots. However, the quantity of tannins was influenced by the climatic variables except for sunshine. The duration of the vegetative cycle and its precocity had a significant influence on the percentage in prodelphinidin. The average degree of polymerization was correlated with the delta C13 and with rainfall between flowering and ripening. This study showed a year effect on the content of tannins, expressed in g/kg, the DPm and the percentage in prodelphinidin. The proportion in galloyled units was correlated with the water stress during the period previous veraison and by the vigour of the vine.

Download the PDF

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Réjane CHAMPENOIS, Yves CADOT, Nicolas BOTTOIS, Gérard BARBEAU

INRA, UE 1117 Vigne et Vin, F-49070 Beaucouzé, France

Contact the author

Keywords

terroir, tanins condensés, Cabernet franc, Vitis vinifera

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

IMPACT ON CHITOSAN APPLICATION OF DIFFERENT MICROORGANISMS HAVING OENOLOGICAL INTEREST

Chitosan is an effective antimicrobial agent available in the wine industry, because it ensures the control of a of spoilage microorganisms, such as Brettanomyces of lactic acid bacteria.

Read More

The importance of rural extension and advisory services to achieve a sustainable viticulture in a climate change scenario

A healthy and dynamic agricultural sector is an important foundation of rural development, generating strong bonds to other economic sectors.

Read More

UV-VIS-NIR spectroscopy as a tool for predicting volatile compounds in grape must

The wine sector is one of the most significant industries worldwide, with Spain being a leading country in wine production and export. A key factor in wine quality is its aroma, which is directly influenced by the volatile compounds present in the grape, with terpenes being among the most significant contributors.

Read More

The characterization of Vitis vinifera L cv. Cabernet sauvignon: the contribution of Ecklonia maxima seaweed extract

Biostimulants and biofertilizers are considered environmentally friendly and cost-effective alternatives to synthetic fertilizers, plant growth regulators and crop improvement products. Broadly, plant biostimulants are expected to improve nutrient use efficiency, tolerance to abiotic stress, quality traits and availability of nutrients in the soil or rhizosphere. Currently, seaweed extracts account for more than 33% of the total plant biostimulant market. Within this category, Ascophyllum nodosum (AN), is the most widely studied and applied in biostimulant formulations.

Read More

For a phenomenology of terroir. A consumers’ perspective

This study investigates the notion of terroir by applying a phenomenological approach, focusing on the subjective experience of consumers. We will consider how terroir is described by consumers in order to gauge their subjective viewpoint and understand their way of describing and defining this spatiality.

Read More