Terroir 2008 banner
IVES 9 IVES Conference Series 9 Enological potential of red grapes: cultivars and geographic origin of vineyards

Enological potential of red grapes: cultivars and geographic origin of vineyards

Abstract

The study of technologic and phenolic maturation is very efficient to determinate quality potential of red grapes cultivars and clones under different maturity levels or geographic origins. This study was made in order to evaluate the enologic potential of the grape cultivars from the six Brazilian viticultural regions: Planalto Catarinense – Santa Catarina State (28°18’S – 49°56’W – altitude between 900 and 1400m); Planalto de Palmas – Santa Catarina State (27°00’S – 52°00’W – altitude between 1200 and 1400m); Campos de Cima da Serra – Rio Grande do Sul State (28°33’S – 50°42’W – altitude between 900 and 1100m); Serra Gaúcha – Rio Grande do Sul State (29°10’S – 51°32’W – altitude between 450 and 700m); Serra do Sudeste – Rio Grande do Sul State (30°33’S – 52°31’W – altitude between 350 and 450m); Campanha Meridional – Rio Grande do Sul State (30°53’S – 55°32’W – altitude between 200 and 350m). The variables analyzed from the grapes were: in the whole grapes: physic analysis (grape weight; % of skins, seeds and meet in relation to total weight; seeds number and % of juice). In the juice: levels of sugars, organic acids and pH. In the skins and seeds: levels and stractibility of anthocyans and tannins of skins, levels of seed tannins, total polyphénols, total tannins and skin tannins/seed tannins ratio. The totality of results makes the technologic and phenolic profile of the grapes at maturity and made possible put and discriminate one cultivar in relation to geographic origin and different cultivars into the particular region. The most significant differences concerning enological potential of cultivars and regions were observed for sugar levels, titrable acidity, total anthocyanins and total polyphénols.

Download the PDF

DOI:

Publication date: December 8, 2021

Issue: Terroir 2008

Type : Article

Authors

Celito CRIVELLARO GUERRA, Jorge TONIETTO and Gisèle MION GUGEL

Embrapa, Centre National de Recherche de la Vigne et du Vin, B.P. 130, C.P. 95.700-000, Bento Gonçalves, RS, Brésil

Contact the author

Keywords

 Maturation, raisins noirs, cépages, régions, origine géographique 

Tags

IVES Conference Series | Terroir 2008

Citation

Related articles…

Application of plant growth regulators on Vitis vinifera L var. Mouchtaro affect berry quality characteristics & associated microbial communities

The phenolic profile of the red grapevine varieties berries is a key quality factor and several techniques have been applied to improve it (Perez-Lamela et al., 2007; Singh SK and Sharma, 2010). The last decade the application of resistance elicitors and phytohormones is an innovative viticultural technique (Paladines-Quezada et al., 2021; Alenazi et al., 2019).In the present study, leaves and berries of a Greek red indigenous variety (Mouhtaro) sprayed with two elicitors, benzothiadiazole and chitosan and a plant hormone abscisic acid, during veraison.

Read More

An overview of the impact of clone, environmental factors and viticultural techniques on rotundone concentration in red wines

Rotundone is the main aroma compound responsible for peppery notes in red wine. This positive and very potent molecule has an odor threshold of 8 ng/L in water and 16 ng/L in red wine. It has been detected in several grape varieties with some of the highest concentrations recorded in Syrah, Duras, Tardif and Noiret, an interspecific hybrid grown in the North-East of the USA. If several winemaking practices have been identified to lower rotundone in wine, up to date, no enological solution has proved its efficiency to maximize it. This means that efforts to produce high rotundone wines must be undertaken in vineyards. This work provides practical ways that can be used by winegrowers to modulate rotundone levels in their wines.

Read More

Impact of organic inputs on soil biodiversity in vineyard systems. A monitoring approach during 20 years

Conventional vineyard practices have lead in many environmental disturbances as erosion, soil compaction, loss of organic matter and soil biodiversity, water contamination

Read More

Influence of grape withering on corvina and corvinone aroma composition

AIM:Valpolicella is a wine region located in Italy north-east, famous for the production of dry and sweet red wines from withered grapes, including Amarone and Recioto. The aim of this study is to understand the influence of the withering process on Corvina and Corvinone wines aroma profiles. METHODS:Wines were produced with a standard red wine winemaking protocol with Corvina and Corvinone grapes from different Valpolicella vineyards and vintages. In consideration of the local traditional practice of post-harvest withering of the grapes, wines from each vineyard were obtained from either fresh and withered grapes. Wines were analysed by Solid Phase Extraction and Solid Phase Micro Extraction gas chromatography coupled to mass spectrometry.

Read More

Simulating single band multispectral imaging from hyperspectral imaging: A study into the application of single band visible to near-infrared multispectral imaging for determining table grape quality

To be accepted by the market and consumers table grapes need to meet certain requirements in terms of physical and chemical quality parameters.

Read More