 IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2021 9 Grapevine diversity and viticultural practices for sustainable grape growing 9 Enological and nutraceutical potential of some grape varieties tolerant to downy mildew and powdery mildew

Enological and nutraceutical potential of some grape varieties tolerant to downy mildew and powdery mildew

Abstract

AIM: Since 2012 the Veneto Region regulation (north-east Italy) allowed wine production using 20 hybrid grapevine varieties selected for their high tolerance to downy mildew and powdery mildew. Characterized by vigour, high grape productivity and low pesticide use, these varieties are suitable to develop sustainable viticulture in mountain areas located at medium altitudes. Project VINIRES (October 2018-November 2021) evaluates the oenological potential of four resistant vine varieties currently diffused at medium altitudes: Cabernet Cortis, Bronner, Souvignier gris, Johanniter. Study by metabolomics provides the complete qualitative and semi-quantitative profile of secondary metabolites in grape to estimate the enological potential of these varieties.

METHODS: Grapes harvested in 2019 and 2020 from vineyards located in Belluno province. Analyses performed by UHPLC/Q-TOF 40.000-resolution mass spectrometry. Targeted identification of the metabolites by using the homemade database GrapeMetabolomics (Flamini et al., 2013).

RESULTS: Cabernet Cortis: presence of anthocyanin diglucosides (Mv-diglu, Dp-diglu, Cy-diglu, Pt-diglu, Pn-diglu). Anthocyanin content comparable to V. Vinifera varieties such as Cabernet Sauvignon and Raboso Piave (Mattivi et al., 2006). Relevant presence of B-ring trisubstituted flavonols. Linalool and nerol pentosyl-hexoside as main aroma precursors. Bronner: high content of flavonoids such as quercetin (Q), taxifolin (T), and flavanones. Significant presence of monoterpene-diols glycosylated. Johanniter: high antioxidants such as rutin and Q-pentoside, significant T-pentoside. Main aroma precursor geraniol glycoside. Souvignier gris: presence of some anthocyanins (Cy-diglu, Cy-monoglu 3-fold than Cabernet Cortis) and stilbene compounds. Main aroma precursors: alpha-terpineol pentosyl-hexoside and vomifoliol glucoside (roseoside).

CONCLUSIONS:

Cabernet Cortis is suitable for production of wood-aged wines with floral notes. Bronner has semi-aromatic character and an interesting potential for producing fresh and fruity white wines. Johanniter, characterized by high geraniol, has high aptitude to produce aromatic sparkling wines. Souvignier gris is characterized by the presence of alpha-terpineol glycoside (floral aroma precursor) and stilbene phytoalexins correlated to the nutraceutical properties of wines.

DOI:

Publication date: September 2, 2021

Issue: Macrowine 2021

Type: Article

Authors

Fabiola De Marchi, Mirko DE ROSSO, Massimo GARDIMAN, Luigi SANSONE, Annarita PANIGHEL

Council for Agricultural Research and Economics – Viticulture & Enology (CREA-VE)

Contact the author

Keywords

Resistant vine, grape, metabolomics, high resolution mass spectrometry, polyphenols, aroma precursors, phytoalexins

Citation

How are canned wine drinkers perceived? An investigation involving Swiss nationals and different scenarios of outdoor leisure activities

This study examines how people who consume wine in cans are perceived in terms of their basic personality characteristics, helps understand the role of cultural background on people’s perception, and verify the role played by the consumption context on the perception. Our hypothesis is that prejudice and negative attitudes towards wine in cans might exert a negative effect on the evaluation of people who consume canned wine. To evaluate this hypothesis, the consumption of wine in cans was evoked in four different contexts of use during outdoor leisure activity (beach resort, ski resort, desert safari, and party). In order to examine the effect of culture on subject’s response we use participants from Switzerland, a country where three different cultures, associated with three different languages, cohabit.

Determination of secondary metabolites as quality and typicalness tracers in autochthonous vitis vinifera grapes and wines from Ischia isle

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.19.4" _module_preset="default" module_text_align="center" module_font_size="16px" text_orientation="center"...

Predicting oxygen consumption rate by tannins through sweep linear voltammetry and machine learning models

Nowadays, it is well known that oxygen significantly impacts wine quality. The amount of oxygen wine consumes during the winemaking process depends on several factors, such as storage conditions, the number of rackings, the materials used for aging, and the type of closure chosen for bottling.

The role of vine trunk height in delaying grape ripening: insights for viticultural adaptation strategies

Global changes in temperature patterns necessitate the development of viticultural adaptation strategies. One promising approach involves modifying the training system and elevating trunk height. This study explored the potential of raising the vine trunk as an adaptive strategy to counteract the effects of increasing temperatures and delay ripening. Thermal conditions, radiation levels, and must composition were measured at different heights (10 and 150 cm) in a commercial vineyard of the minority variety Maturana Blanca, trained on a vertical cordon.

Terroir in Slovak viticulture area

Terroir method has been used for assessment of growing site in the world for years. In Slovakia actually regionalisation is used as the similar method which does not cover all the elements of wine quality evaluation however.