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» Variability of Tyrosol, Hydroxytyrosol and Tryptophol contents in Sangiovese wines produced by a single strain of Saccharomyces cerevisiae

Inactivated yeasts: production and technological characteristics
Piergiorgio Comuzzo, Di4A, Università di Udine; Federico Giotto, Giottoconsulting srl; Gianmaria Zanella, Enologica Vason
The role of yeast derivatives in the activation of alcoholic fermentation is well known. However, the lack of knowledge about the composition of these products makes their use essentially based on ...
Published on: 17/02/2020
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Variability of Tyrosol, Hydroxytyrosol and Tryptophol contents in Sangiovese wines produced by a single strain of Saccharomyces cerevisiae

Variability of Tyrosol, Hydroxytyrosol and Tryptophol contents in Sangiovese wines produced by a single strain of Saccharomyces cerevisiae

ROMBOLI Yuri , MANGANI Silvia, BUSCIONI Giacomo and VINCENZINI Massimo Dipartimento di Gestione dei Sistemi Agrari, Alimentari e Forestali (GESAAF), U

Tyrosol, hydroxytyrosol and tryptophol are reported to possess several health-enhancing activities, deriving from their free radical scavenging, anticarcinogenic, cardioprotective and antimicrobial properties.

Tyrosol and tryptophol are produced by yeasts during alcoholic fermentation from the catabolism of amino acids tyrosine and tryptophan, respectively, whereas hydroxytyrosol is produced by hydroxylation of its precursor tyrosol.

Tyrosol and tryptophol are described as quorum sensing molecules in different yeast species. These aromatic alcohols allow S.cerevisiae to respond to both cell density and nutritional state of the environment.
The aim of this work was to investigate on the factors, other than yeast strain, affecting the accumulation of tyrosol, hydroxytyrosol and tryptophol in wine

Poster presented at Enoforum 2013, 7-9 May, Arezzo (Italy)

Published on 05/05/2014

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(907,889 Kb) Open and read the poster (pdf, 907 Kb)

E. Aguera, J.M. Sablayrolles

The seasonal character of harvests limits winemaking considerably, especially oenological research. Thus, conserving sterile musts during the whole year to carry out experiments is certainly a very...

Published on:10/08/2005

A new device for stabilisation of white wines throughout a continous flow system

Parpinello, G.P., Ricci, A., Serantoni, M., Balducci, A., Ragni, L., Versari, A.; University of Bologna, Italy

Proteins occurring in wine originate from several sources during the winemaking process. Protein content in wines ranges from traces up to hundreds of mg/L, and may cause physical instability in wh...

Published on:15/01/2020

A novel electrochemical approach for rapid analysis of white grapes polyphenols and monitoring of pre-fermentative operations

M. UGLIANO, J. WIRTH, S. BÉGRAND, J. B. DIÉVAL, C. PASCAL, S. VIDAL; Università degli Studi di Verona - Vinventions, Francia

The ability to rapidly quantify and characterize phenolic composition of grapes and must is critical in the optimization of winemaking practices. In the case of white wine production, measurement o...

Published on:02/05/2019

An electrochemical method for real time measurement of polyphenols during winemaking

By Christine Pascal, Nelly Champeau, Jean Baptiste Diéval, Stéphane Vidal; Vinventions, Enology team, France

Polyphenols are known to play a major role in must oxidation as well as in wine aging and oxidation. However, they are difficult to measure in the cellar due to lack of adequate technology. Therefo...

Published on:03/02/2020

Application of visible/near infrared spectroscopy to assess the grape infection at the winery

A. Tugnolo, V.Giovenzana, R. Beghi, L. Brancadoro, R. Guidetti; DiSAA, Università degli Studi di Milano, Italy

The aim of this work was to investigate the applicability of vis/NIR spectroscopy for rapid grape infection assessment in a view of a grape classification directly at the check point station enteri...

Published on:09/10/2018

Most popular practices in Europe against FD

Results of interviews in 10 winegrowing regions

This document illustrate practices observed on field in the famework of interviews realized during Winetwork project. 219 interviews were realized in 10 european winegrowing regions with the object...

Published on:06/12/2016

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