Terroir 1996 banner
IVES 9 IVES Conference Series 9 Evolución de los compuestos fenólicos durante el envero y la maduración en la DO Tarragona

Evolución de los compuestos fenólicos durante el envero y la maduración en la DO Tarragona

Abstract

La evolución de los contenidos en las pieles de compuestos fenólicos (fenólicos totales, antocianos totales, antocianos individuales por HPLC, catequinas y proantocianidoles) a lo largo del envero y maduración han sido analizados en cepas de 7 años en 2 variedades, Cabernet Sauvignon y Tempranillo, en una zona correspondiente a la DO Tarragona. Asimismo, se efectuaron los análisis estándar (OIV) y de color para caracterizar los vinos obtenidos.
Los resultados muestran que la variedad Cabernet Sauvignon presenta una producción de antocianos por peso de baya superior a la que se obtiene con la variedad Tempranillo, a pesar que los niveles en compuestos fenólicos totales son similares para ambas. Los niveles de catequinas y proantociandinas son asimismo similares. Los análisis por HPLC muestran que ambas variedades presentan como antocianidina mayoritaria la malvidina durante toda la evolución. Sin embargo, hay diferencias notables en cuanto a la proporción de derivados acilados y al predominio del agente acilante (cumárico o acético).
En cuanto a los resultados de los análisis de los vinos, la variedad Cabernet Sauvignon produce vinos que alcanzan un grado alcohólico más elevado que Tempranillo. Los compuestos fenólicos y los antocianos se presentan en concentraciones más elevadas en Cabernet. Los rendimientos de cosecha indican mayores volúmenes en Tempranillo, variedad de racimo más grande que Cabernet Sauvignon. Si se considera el contenido en compuestos fenólicos alcanzado en Cabernet Sauvignon y se compara con resultados procedentes de otra zona vitícola con características edafoclimáticas distintas se observan diferencias. Debe destacarse el efecto del mesoclima en Tarragona, más lluvioso en verano, que conduce a producciones demasiado elevadas para conseguir una mayor concentración tánica: las condiciones climáticas durante el período estival en Tarragona no permiten alcanzar el contenido máximo en polifenoles.

DOI:

Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Josep Valls, Miriam Lampreave, Montse Nadal and Lluís Arola

Unitat d’Enologia del Centre de Referència en Tecnologia d’Aliments de la Generalitat de Catalunya. Dept. de Bioquímica i Biotecnologia. Facultat d’Enologia de Tarragona, Universitat Rovira i Virgili. C. Ramón y Cajal, 70, 43005 Tarragona

Contact the author

Tags

IVES Conference Series | Terroir 2000

Citation

Related articles…

Fertilization with Seaweed (Laminaria japonica) on the characteristics of the bunch and the quality of the grape must of ‘Cabernet Sauvignon’

The objective of the present work was to study the influence of the foliar application of seaweed (Laminaria japonica), on the bunch and on the must in the ‘Cabernet Sauvignon’ grape. The experiment was carried out in the years 2021/2022, in a 21-year-old commercial vineyard, in the municipality of “Dom Pedrito” – “Rio Grande do Sul” (RS). A completely randomized experimental design was used, with 4 treatments and 4 replications (7 plants per replication). The treatments were: T1- control treatment; T2- Exal Powder 5 g L-1; T3- Hidro Exal 15 ml L-1; T4- Exal Powder 5 g L-1+ Hidro Exal 15 ml L-1.

The relationship of wine store customers with the areas of production, considering provenance and tourism

This work aims at identifying the most appropriate marketing strategies to inform consumers of the global market about the added value of the wines of Friuli Venezia Giulia.

Tolerance to sunburn: a variable to consider in the context of climate change

Climate change effects on grapevine phenology and grape primary and secondary metabolites are well described in recent literature. Increasing frequency and intensity of heat waves may be responsible for important yield losses in the future. However, the impact of this event is not so well described in literature. The present study highlights the importance of grape variety tolerance as a mitigation tool to climate change.

Relationship between soil and grapevine variety in the wineyard of Jura: example for the “Trousseau” variety from the “Terroir” of Montigny-Lès-Arsures (France)

Seven plots located in the commune of Montigny-lès-Arsures (Jura, 39), planted with grapevine varieties Trousseau and Savagnin, were chosen for a study of soil pits and a distribution of major and trace chemical elements in soils and wines. It was shown that the mineral matrix of the soil reflects the geological substratum and the sub-surface alteration process, while the organic soil matrix depends on agro-viticultural practices.

A spatial explicit inventory of EU wine protected designation of origin to support decision making in a changing climate

Winemaking areas recognized as protected designations of origin (PDOs) shape important economic, environmental and cultural values that are tied to closely defined geographic locations. To preserve wine products and wine-growing practices adopted in different PDOs these areas are strictly regulated by legal specifications. However, quality viticulture is increasingly under pressure from climate change, which is altering the local conditions of many winegrowing areas. Therefore, maintaining traditional wine products will require the adoption of tailored adaptation strategies, including possible changes in the legal regulation of protected wines. To this end, it is necessary to have a comprehensive knowledge on PDOs including their extension, products and allowed practices. While there have been efforts to build databases that summarize the characteristics for individual wine PDO areas and to quantify the related effects of climate change, much information is still included only in the official documentation of the EU geographical indication register and has never been collected in a comprehensive manner. With this study we aim at filling this gap by building a spatial inventory of European wine PDOs that supports decision making in viticulture in the context of climate change. To map and characterize European wine PDOs, we analysed their legal documents and extracted relevant information useful for climate change adaptation. The output consists of a comprehensive geographical dataset that identifies the boundaries of all 1200 European wine PDOs at unprecedented spatial resolution and includes a set of legally binding regulations, such as authorized vine varieties, maximum yields and planting density. The inventory will allow researchers to analyse the impacts of climate change on European wine PDOs and support decision makers in developing tailored adaptation strategies. This includes, among others, the evaluation of new vineyard site selection, the expansion of cultivated varieties or the authorization of irrigation in vineyards.