Terroir 2016 banner
IVES 9 IVES Conference Series 9 Environmental and viticultural practice effects on the phenolic composition of grapes: impact on wine sensory properties

Environmental and viticultural practice effects on the phenolic composition of grapes: impact on wine sensory properties

Abstract

Grape phenolic compounds are located in the internal layers of grape skins and seeds. They are synthesized via the phenyl-propanoid biosynthetic pathway which is modulated by both biotic and abiotic factors. Considerable research has been conducted to clarify the evolution pattern of grape phenolic compounds and the role of environmental and viticultural factors that can manipulate their levels at harvest. The accumulation of phenolic compounds in grapes may be influenced by grape variety, environmental conditions and viticultural practices. More notably, the influence of irrigation on the accumulation of anthocyanins in grapes has been treated by several authors reporting an overall positive impact of mild water deficit, attributed to changes in berry skin-to-pulp ratio, modifications in grape microclimate or differences in the partitioning of assimilates among vine organs. Moreover, light environment of the grapes, as affected directly by leaf removal, is reported to modify skin anthocyanin content, profile and extractability. However, under hot climate conditions, increased temperatures of exposed berries may hasten phenolic ripening and decouple skin and seed sensory traits. Concerning berry tannins, reports on the effects of environmental and viticultural conditions are fewer and inconsistent. Moreover, there is limited information available concerning the effects of environmental and viticultural conditions on the structural characteristics of grape proanthocyanidins, such as polymerization, galloylation and subunit composition, which define wine sensory properties.

DOI:

Publication date: June 23, 2020

Issue: Terroir 2016

Type: Article

Authors

Stefanos KOUNDOURAS

Laboratory of Viticulture, School of Agriculture, Faculty of Agriculture, Forrestry and Natural Environment, Aristotle University of Thessaloniki, University Campus 541 24 Thessaloniki, Greece

Contact the author

Keywords

grapevine, anthocyanins, tannins, flavan-3-ols, astringency, bitterness, polymerization, irrigation, microclimate

Tags

IVES Conference Series | Terroir 2016

Citation

Related articles…

Exploring the mechanisms of grapevine single berry development and ripening

The strategy of single berry phenotyping is a recently rediscovered research tool that has gained great attention. The latest studies have indicated that previous physiological models based on pooling asynchronous populations of berries provided biased or blurred information on berry development key players. The possibility of monitoring and sampling single synchronized berries to study their development sequentially has opened new lines of research aimed at unraveling the genes that regulate grapevine fruit development. This study aimed to decipher the gene pathways responsible for the activation/deactivation of physiological processes involved in the green phase of growth, the onset of ripening, and the second growth phase.

Influenza di alcuni aspetti ambientali sul contenuto di stilbeni nel vino nell’area della DOC “Sangiovese di Romagna” (Italia)

The ambition of the zonation of the Doc “Sangiovese di Romagna” is described as 25 siti sperimentali, aventi diversa origine geologica, in cui è stato individuato un vigneto omogeneo per la determinazione dei principali parametri viticoli ed enologici. In seguito è stato analizzato il contentto di stilbeni nei vini al fine di indepth il legame con le charatteristiche geopedologiche. The studio describes the positive relationship between the altitude and the content of the trans -piceide nelle province di Forlì and Ravenna and of the trans -resveratrolo a Ravenna. I suoli con maggiore calcare attivo hanno fornito vini più ricchi in stilbeni.

Concorrenza, qualità, zonazione. Una valutazione economica della relazione tra politiche, regole e strumenti di gestione dei prodotti del territorio

In questa nota viene analizzata l’importanza della conoscenza del territorio nel funzionamento del mercato dei prodotti alimentari di qualità e nella gestione delle denominazioni di origine.
La denominazione di origine si sta affermando in tutti i mercati alimentari, dopo l’esperienza secolare maturata nel mercato del vino. Iniziative nel campo del turismo, delle produzioni ecologiche, della promozione dello sviluppo, sono collegate alla dimensione territoriale, in risposta ad un generale orientamento della domanda.

Clustering wine aromatic composition of Vitis vinifera grapevine varieties

Climate change is likely to impact wine typicity across the globe, raising concerns in wine regions historically renowned for the quality of their terroir. Amongst several changes in viticultural practices, replacing some of the planting material (i.e clones, rootstocks and cultivars) is thought to be one of the most promising potential levers to be used for adapting to climate change. But the change of cultivars also involves the issue of protecting the region’s wine typicity.

Influence of the different cork stoppers and sulfur dose in champagne quality

As is well known, Champagne is a product of the highest quality recognized in the international market. Champagne is a type of sparkling wine made in the Champagne region