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…

The importance of soil and geology in tasting terroir; a case history from the Willamette valley, Oregon

Wines differ from each other based on seven different factors: the type of grape; the bedrock geology and resulting soils; the climate; the soil hydrology; physiography of the site; the winemaker and the vineyard management techniques. The first five of these factors make up what the French call terroir, “the taste of the place”.

Read More

Impact of acidification by fumaric acid at vatting on Cabernet-Sauvignon wine during winemaking

Acidity of grape berries is lowered due to climate changes (1), resulting in musts and wines with higher pHs. These higher pHs induce microbiological instability

Read More

On-farm monitoring of grapevine water and nitrogen status in relation to different soil management practices in Valais, Switzerland

In response to increasing societal demands for environmentally-friendly viticulture, winegrowers are adapting their cultivation techniques, particularly by reducing the use of herbicides.

Read More

Typology of wines in touch with environmental factors of terroirs and grapevine. Application to the Chinon vineyard

According to the vintage, it may be difficult for vine growers to make a decision regarding the type of wine in relation with the soils.

Read More

Rootstock effects on Grüner Veltliner ecophysiology in the Kremstal wine region of Austria

Understanding the impact of rootstocks on grapevine water relations is crucial to face climate change maintaining vineyard productivity and sustainability.

Read More