Terroir 2008 banner
IVES 9 IVES Conference Series 9 Phenolic characterization of four different red varieties with “Caíño” denomination cultivated in Northwestern Spain

Phenolic characterization of four different red varieties with “Caíño” denomination cultivated in Northwestern Spain

Abstract

In this work, these four red varieties were characterized in terms of phenolic composition. Thus, the anthocyanin accumulation and the extractability evolution during ripening were compared. The extractability assays were carried out using similar pH conditions than those involved in winemaking process. Furthermore, seed phenolic maturity was determined in order to obtain information about the tannin aggressiveness. These parameters are of great importance not only for the varietal differentiation but also for the planning and management of winemaking process. On the other hand, the anthocyanin distribution was determined because it permits the assessment of varietal differentiation, being it considered as a taxonomic characteristic.
Total anthocyanin concentration was significantly greater for Caíño Longo variety, while extractable anthocyanin content for this variety was similar than that corresponding to Caíño Astureses variety. Furthermore, the lowest total and extractable anthocyanin concentrations were associated with Caíño Redondo and Caíño da Terra cultivars. Thus, the extraction facility showed good skin ripeness grade only for Caíño Astureses variety. Furthermore, the seed ripeness resulted to be particularly incomplete for Caíño Astureses and Caíño Redondo varieties, which indicates their worse adaptation to the “terroir”. Malvidin glucoside was the majority anthocyanin in all the varieties studied, excepting the Caíño da Terra variety. The Caíño Longo cultivar showed results statistically higher, while the Caíño da Terra cultivar presented the lowest values of this compound.

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Susana RÍO SEGADE, Sandra CORTÉS DIÉGUEZ, Emilia DÍAZ LOSADA

Estación de Viticultura e Enoloxía de Galicia (EVEGA). Ponte San Clodio s/n, Leiro, 32427-Ourense, España

Contact the author

Keywords

Caíño, phenolic characterization, anthocyanin, accumulation, extractability

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Investigation of the effect of gelatine and egg albumin fining and cross-flow microfiltration on the phenolic composition of Pinotage red wine

Results indicated that cross-flow microfiltration removed similarly to fining treatments the most astringent tannins, but cross-flow microfiltration also removed up to 14 % more colour. RP-HPLC and spectrophotometric results showed that egg albumin is a softer fining treatment compared to gelatine and cross-flow microfiltration.

Application of a low-cost device VIS-NIRs-based for polyphenol monitoring during the vinification process

In red wine production, phenolic maturity is becoming increasingly important. Anthocyanins, flavonoids and total polyphenols content and availability significantly influence the harvest time of wine grapes while, during vinification process, their extraction strongly affects wine body, color and texture

Does the location of wine cellars have significant impact on the evolution of madeira wine polyphenols?

Unlike table wines, Madeira Wine (MW,17-22% ABV) benefits from a long aging period under thermo-oxidative aging conditions, during which it gains its unique and complex flavour. A broad study is ongoing and aims to assess if the differences in the storage conditions impact significantly the evolution of MWs during canteiro aging. Considering that polyphenols have a significant role in the wine aging, we intended to appraise if there are significant differences in the evolution trends of polyphenols of MWs aging in different cellars under canteiro. Different MWs were aged into brand-new oak casks in two different wine cellars, one in Funchal (B) and other in Caniçal (Z). Temperature and humidity data were sensor recorded. RP-HPLC-DAD was used to perform the identification and quantification of polyphenols [1]. CIELab parameters were also assessed, using an UV-Vis spectrophotometer.

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.

Comportement hydrique des sols viticoles et leur influence sur le terroir

L’étude des relations Terroir – Vigne – Raisin est complexe. La recherche et le développement des facteurs qualitatifs qui influencent le caractère des vins sont multiples. Divers travaux mettent en évidence la relation entre l’alimentation en eau de la plante, son développement végétatif et les caractéristiques de ses raisins.