WAC 2022 banner
IVES 9 IVES Conference Series 9 WAC 9 WAC 2022 9 3 - WAC - Posters 9 Multispectral fluorescence sensitivity to acidic and polyphenolic changes in Chardonnay wines – The case study of malolactic fermentation

Multispectral fluorescence sensitivity to acidic and polyphenolic changes in Chardonnay wines – The case study of malolactic fermentation

Abstract

In this study, stationary and time-resolved fluorescence signatures were statistically and chemometrically analyzed among three typologies of Chardonnay wines with the objectives to evaluate their sensitivity to acidic and polyphenolic changes. For that purpose, a dataset was built using Excitation Emission Matrices of fluorescence (N=103) decomposed by a Parallel Factor Analysis (PARAFAC) and fluorescence decays (N=22), mathematically fitted, using the conventional exponential modeling and the phasor plot representation. Wine PARAFAC component C4 coupled with its phasor plot g and s values enable the description of malolactic fermentation (MLF) occurrence in Chardonnay wines.  The combination of multispectral fluorescence parameters opens a novel routinely implementable methodology to diagnose fermentative processes.

DOI:

Publication date: June 27, 2022

Issue: WAC 2022

Type: Article

Authors

Maxime, Pacheco, Ambroise, Marin, Jean-Marie, Perrier-Cornet, Christian, Coelho

Presenting author

Maxime, Pacheco – UMR PAM

UMR PAM – Dimacell Imaging Facility | UMR PAM – Dimacell Imaging Facility | UMR PAM – Dimacell Imaging Facility | UMR PAM – Vetagro Sup

Contact the author

Keywords

Malolactic fermantation – Traceability – PARAFAC components – Fluorescence lifetime – Phasor plot

Tags

IVES Conference Series | WAC 2022

Citation

Related articles…

Grapesoil: An integrated model to simulate water and nitrogen fluxes in diversified vineyards

Cover crops in vineyards bring numerous benefits, including enhanced soil health, improved water infiltration, and potential pest reduction. However, they also present risks, such as reduced vine vigour and yield due to competition for water and nutrients (Celette & Gary 2013, Garcia et al., 2018).

Physiological responses of crimson seedless (Vitis vinifera) grapevines to altered micro climatic conditions and different water treatments in the Breede River Valley of South Africa

Challenging conditions created by limited water supply and changes in the climate require an understanding of the physiological status of table grapes along the whole value chain. This is critical to develop tools for regulatory management of growth balances and grape quality. This study aimed to determine the impact of different amounts of water and an altered micro-climate (complete covering of vineyards with plastic) on the physiological reaction of the grapevine during the growth season.

Sustainable agriculture and food innovation: preserving agrodiversity and advancing vineyard resilience in Madeira

The ISOPlexis – Center for Sustainable Agriculture and Food Technology, University of Madeira, is a research unit that develops activities in the fields of Sustainable Agriculture, Agri-food Technology and Bioeconomy, with focus on agrodiversity monitoring and phenotyping,

Characterization of varieties named ‘Caiño’ cultivated from Northwest of Spain

The ‘Caiño’ cultivar was cultivated in Galicia (Northwestern Spain) before the invasion of grape phylloxera. Genetic diversity from this cultivar have been described and considered as originating in Galicia, ‘Caiño Tinto’, ‘Caiño Bravo’, ‘Caiño Redondo’, ‘Caiño Longo’ and ‘Caiño Blanco’.

Green Vineyards: skills development for wine industry personnel: responding to the challenges of climate change

A fair and sustainable society, with a modern, resource-efficient and competitive economy cannot be achieved without a workforce to support it.