Terroir 2020 banner
IVES 9 IVES Conference Series 9 Chemical boundaries of wine identity: rationalizing grape and wine aroma diversity for improved terroir management

Chemical boundaries of wine identity: rationalizing grape and wine aroma diversity for improved terroir management

Abstract

Aims: Wine perceived quality lies on a number of different factors. Among these, sensory features, which are in turn dependent on chemical composition, play a primary role. There is traditionally a great emphasis on producing wines that have specific sensory profiles, particularly aroma, that reflect identity features connected to the place and the variety of origin. In the case of high quality wines there is also an expectation for enhances longevity. In this paper, we examine the main chemical drivers of wine geographical identity, its relationship with longevity and the (bio)chemical processes leading to their occurrence in wine. 

Methods and Results: results from different studies are covered, highlighting the importance of understanding the aroma chemical fingerprint of individual wine types in order to manage regional identity/terroir/cru expression accordingly. The contribution of different volatiles to the expression of typical aroma attributes is defined. 

Conclusions:

based on existing knowledge, the possibility to rationalize viticultural and winemaking practices to enhance the expression of aroma-relevant terroir features is limited to a restricted number of grape varieties. For most of the wines produced globally this process is still based on anectodal observations.

Significance and Impact of the Study: aroma chemical components to specific aroma attributes reflecting geographical identity and terroir are identified, in particular for different Italian wines.

DOI:

Publication date: March 25, 2021

Issue: Terroir 2020

Type : Video

Authors

Maurizio Ugliano*, Davide Slaghenaufi, Giovanni Luzzini, Jessica Samaniego Solis

Department of Biotechnology, University of Verona, via della Pieve, 70, 37029 San Pietro in Cariano (VR), Italy

Contact the author

Keywords

Wine aroma, geographical identity, terroir, terpenes, norisoprenoids, volatile sulfur compounds

Tags

IVES Conference Series | Terroir 2020

Citation

Related articles…

Effect of drought on grapevine wood fungal pathogen communities using a metatranscriptomics approach

Crops are facing increasing biotic and abiotic stress pressures due to global changes. However, trade-off mechanisms between these stresses and the underlying physiological processes are still poorly understood, especially in perennial crop species. To better understand these trade-offs, we studied the effect of drought on grapevine (Vitis vinifera) physiology and esca-related wood fungal communities. Esca is a vascular disease caused by a community of wood-infecting pathogenic fungi, and characterized by trunk necrosis, leaf scorch symptoms, yield losses, and mortality.

Kinetic investigations of the sulfite addition on flavanols

Sulfonated monomeric and dimeric flavan-3-ols are recently discovered in wine and proved to have great importance in understanding wine chemistry and quality [1, 2].

Using open source software in viticultural research

Many high quality Open Source scientific applications have been available for a long time. Some of them have proved to be particularly useful for carrying out the usual activities involved in viticultural research projects, such as statistical analyses (including spatial analyses), GIS work, database management (possibly integrated with statistical and spatial analysis) and even “low-level” often highly time-consuming activities (e.g. repetitive task on text files).

Sustainable yield management through fruitfulness and bunch architecture manipulation

Vineyards are highly variable and this variation is largely driven by environmental conditions and seasonal variation. For example, warm temperatures

New tools for a visual analysis of vineyard landscapes?

A vineyard landscape is above all an area observed by someone, that is to say a physical entity perceved and represented by this person.