The structural diversity is one of the most remarkable characteristics of proanthocyanidins (PA). Indeed, PA in wines may vary in the B-ring and C-ring substitutes, the C-ring stereochemistry, the degree of polymerization (DP) and the linkage between the monomers. Knowing in detail the structural characteristics of the PA of a wine can help us to understand and modulate several sensorial characteristics of the wine, such as color, antioxidant properties, flavor, and mouthfeel properties. In the last years was discovered and confirmed the presence of sulfonated monomeric and oligomeric flavan-3-ols in wine [1], as well as was pointed out their importance in wine quality [1,2]. Aim of this work was to explore if and how the presence of the sulfonated PA can influence the wine PA profile and mDP, at different storage parameters. The sample set used included 5 single cultivar wines, four levels of SO₂ and two storage conditions, while all wines were analyzed by phloroglucinolysis reaction - UPLC-MS/MS recently published [3]. The results showed that after the phloroglucinolysis reaction the epicatechin sulfonate increased more than 30 times. The formation of the phloroglucinol adducts after the reaction is highly influenced for the storage conditions, and therebefore the mDP. The wines stored in cellar temperatures has the double of the concentrations of phloroglucinol adducts in comparison to the wines stored in room temperature. The inclusion of epicatechin sulfonate in the determination of mDP leads to lower values in all studied wines, highlighting the relevance of the sulfonated proanthocyanidins in the determination of this relevant parameter.

Influences of SO2 addition and storage conditions in the determination of mean degree of polymerization of proanthocyanidins in aged red wines / Vania Seaz, Daniele Perenzoni, Lais Moro, Maurizio Ugliano, Luca Rolle, Paola Piombino, Andrea Versari, Matteo Marangon, Fulvio Mattivi, Urska Vrhovsek, Panagiotis Arapitsas. - ELETTRONICO. - (2023), pp. 241-241. (Intervento presentato al convegno Œno Macrowine 2023 tenutosi a Bordeaux, France nel July 10-13, 2023).

Influences of SO2 addition and storage conditions in the determination of mean degree of polymerization of proanthocyanidins in aged red wines

Andrea Versari
Membro del Collaboration Group
;
2023

Abstract

The structural diversity is one of the most remarkable characteristics of proanthocyanidins (PA). Indeed, PA in wines may vary in the B-ring and C-ring substitutes, the C-ring stereochemistry, the degree of polymerization (DP) and the linkage between the monomers. Knowing in detail the structural characteristics of the PA of a wine can help us to understand and modulate several sensorial characteristics of the wine, such as color, antioxidant properties, flavor, and mouthfeel properties. In the last years was discovered and confirmed the presence of sulfonated monomeric and oligomeric flavan-3-ols in wine [1], as well as was pointed out their importance in wine quality [1,2]. Aim of this work was to explore if and how the presence of the sulfonated PA can influence the wine PA profile and mDP, at different storage parameters. The sample set used included 5 single cultivar wines, four levels of SO₂ and two storage conditions, while all wines were analyzed by phloroglucinolysis reaction - UPLC-MS/MS recently published [3]. The results showed that after the phloroglucinolysis reaction the epicatechin sulfonate increased more than 30 times. The formation of the phloroglucinol adducts after the reaction is highly influenced for the storage conditions, and therebefore the mDP. The wines stored in cellar temperatures has the double of the concentrations of phloroglucinol adducts in comparison to the wines stored in room temperature. The inclusion of epicatechin sulfonate in the determination of mDP leads to lower values in all studied wines, highlighting the relevance of the sulfonated proanthocyanidins in the determination of this relevant parameter.
2023
Book of Abstract Œno Macrowine 2023 - Bordeaux, France, July 10-13, 2023
241
241
Influences of SO2 addition and storage conditions in the determination of mean degree of polymerization of proanthocyanidins in aged red wines / Vania Seaz, Daniele Perenzoni, Lais Moro, Maurizio Ugliano, Luca Rolle, Paola Piombino, Andrea Versari, Matteo Marangon, Fulvio Mattivi, Urska Vrhovsek, Panagiotis Arapitsas. - ELETTRONICO. - (2023), pp. 241-241. (Intervento presentato al convegno Œno Macrowine 2023 tenutosi a Bordeaux, France nel July 10-13, 2023).
Vania Seaz, Daniele Perenzoni, Lais Moro, Maurizio Ugliano, Luca Rolle, Paola Piombino, Andrea Versari, Matteo Marangon, Fulvio Mattivi, Urska Vrhovsek, Panagiotis Arapitsas
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/937635
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact