 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

Effect of terroir on the quality evolution of Cabernet-Sauvignon in Penedès A.0.C.

Le Cabernet-Sauvignon est un cépage très répandu dans la région du Penedès (Espagne) où cette variété peut bien s’adapter et donne des produits de haute qualité.

Exploring the factors affecting spatio‐temporal variation in grapevine powdery mildew

The spatial distribution of powdery mildew is often heterogeneous between neighboring plots, with higher disease pressure in certain places

The influence of terroir on the quality of wine of the Cahors A.O.C

Dans le but d’améliorer la qualité et la typicité des vins de l’Appellation d’0rigine Contrôlée CAHORS, une étude a été réalisée afin de mettre en évidence l’adéquation Cépage-Terroir- Qualité du vin.
Selon la méthodologie proposée par MORLAT et ASSELIN (1992), neuf unités terroirs ont été déterminées. Sur chacune, des parcelles de référence homogènes quant au matériel végétal Cot ou Malbec ( cépage principal de cette appellation greffé sur S04, et aux méthodes culturales, ont été suivies au niveau agronomique et œnologique (GARCIA et al., 1996).

Multisensory experiential wine marketing

Interest in the pairing, or matching, of wine with music goes way back, with commentators initially using musical metaphors merely to describe the wines that they were writing about. More recently, however, this has transformed into a growing range of multisensory tasting events in which wine and music are deliberately paired to assess, or increasingly to illustrate, the impact of the latter on

Revealing the aroma profile of Greek wines from indigenous grape cultivars

The indigenous Greek grape varieties Assyrtiko, Malagousia, Moschofilero and Roditis are used to produce white wines that are attracting the interest of wine producers and consumers due to their aromatic characteristics [1]. In addition, the Agiorgitiko and Xinomavro varieties are Greece’s most prominent red grape varieties.