Macrowine 2021
IVES 9 IVES Conference Series 9 Aroma composition of mono-varietal white wines for the production of Custoza

Aroma composition of mono-varietal white wines for the production of Custoza

Abstract

AIM: The appellation “Bianco di Custoza” or “Custoza”, born in 1971, is one of the oldest white wines Protected Designation of Origin in Italy. The production area lies on the morainic hills located south-east of Lake Garda, in the province of Verona. The wines belonging to this appellation are obtained from grapes of main varieties, namely Cortese B., Garganega, Trebbiano Toscano and Tocai Friulano alone or jointly for a minimum of 70% (each one not exceeding a maximum of 45%). In addition, Malvasia, Riesling Italico and Renano, Pinot Bianco, Chardonnay and Incrocio Manzoni (cross between Riesling Renano and Pinot Bianco) varieties, alone or jointly, can contribute to the production for a maximum of 30%. According to the appellation regulation, the sensory profile of these wines should be characterized by fruity and floral notes, sometimes with hints of aromatic herbs and spices.

The purpose of this study was to evaluate the volatile profile of monovarietal wines used in the production of Custoza.

METHODS: Cortese B., Incrocio Manzoni, Trebbiano Toscano, Garganega and Tocai Friulano mono-varietal wines were produced by a local winery during the 2020 vintage. Wines were samples at the end of alcoholic fermentation. Free volatile compounds were analyzed using SPME-GC-MS techniques. All data were treated by analysis of variance (ANOVA) for statistical purposes.

RESULTS: Greater presence of trans-linalool oxide, alpha-terpineol, TDN, methyl salycilate and dimethyl sulfide (DMS) was observed in wines produced from grapes of the Cortese B. variety, one of the four varieties main. Monovarietal wines produced from Incrocio Manzoni grapes, one of the minor varieties, showed a greater content of cis-linalool oxide. In Trebbiano Toscano, a greater content of linalyl acetate and beta-damascenone was observed, while a greater presence of methanthiol was found in wines produced from the Tocai Friulano variety

CONCLUSIONS

This study provided a first insight in the potential contribution of the different varietal wines belonging to the Custoza appellation to the aroma composition of the final wines. For both main varieties (Tocai Friulano, Trebbiano Toscano and Cortese B.) and secondary varieties such as the Incontro Manzoni, differences in terpene, norisporeninds and sulfur compound content were observed. Further studies should investigate whether these differences should be attributed to specific varietal patterns and/or to viticultural and winemaking variables.

ACKNOWLEDGMENT

he present work was supported by Cantina di Custoza

DOI:

Publication date: September 7, 2021

Issue: Macrowine 2021

Type: Article

Authors

Beatrice Perina

University of Verona,Davide, SLAGHENAUFI, University of Verona Giovanni, LUZZINI, University of Verona Maurizio, UGLIANO, University of Verona

Contact the author

Keywords

custoza, custoza varieties, white wine, aroma compounds

Citation

Related articles…

The affinity of white wine proteins for bentonite is dependent on wine composition and is directly related to their thermal stability / sensitivity

Bentonite fining is commonly used in oenology to remove all or parts of white wine proteins, which are known to be involved in haze formation. This fining is effective, but has disadvantages: it is not selective, thus molecules responsible for aroma are also removed, it causes substantial volume losses, and finally it generates wastes. Over the last decades, the knowledge of wine proteins has increased: they have been identified, their structures are known, some of them have been crystallized.

Read More

Influence of climate change conditions (elevated CO2 and temperature) on the grape composition of five tempranillo (Vitis vinifera L.) Somatic variants

The current levels of greenhouse gas emissions are expecting to provoke a change on the environmental conditions which, among others, will include a rise of global mean surface temperature and an increment of atmospheric CO2 levels (IPCC, 2014), known as climate change. The response of grapevine (Vitis vinifera L.), one of the most important crops in Europe, from both a cultural and economic point of view, is not completely understood yet and the studies considering the interaction between factors are scarce. Besides, the potential variety of responses among somatic variants needs to be studied in order to be exploited in the avoidance of undesired traits linked to climate change (Carbonell‐Bejerano et al., 2015).

Read More

Zoning of viticulture in Yugoslavia

The last official zoning of Viticulture in Yugoslavia was performed 1978. year, when (according to recommendation of OIV and European Economic Community), regions, sub regions and vineyards districts were established supposing that the varieties which will be exhibit ail the positive agro biological and technological characteristics.

Read More

Adaptation and resilience of scions and rootstocks to water constraint? It’s complicated and requires an integrated approach

The ability, and the underlying mechanisms of grapevines to cope with and adapt to recurring water constraints, are the focuses of this study.

Read More

Using gene editing to improve the hydraulic properties of grapevine roots under water stress conditions

Context and purpose of the study. Epidermal Patterning Factors are a family of small peptides that are highly conserved in the plant kingdom and are involved in several physiological and developmental processes.

Read More