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 role of œnology in the enhancement of terroir expression

The reality of terroir is reflected by the typicality that it confers on the wine. The relationship between the origin of wine and its quality did already exist before the appearance of œnological science. Producers and merchants have always tried to improve wine quality in order to satisfy their clients.

Read More

Perceptive interactions and wine typical fruity aroma 

In this study we developed a methodology to prepare aromatic reconstitutions from fractions of a wine organic extract and we assessed these reconstitutions both in wine model solution and in de- aromatized wine.

Read More

Influence of coinoculation of L. plantarum and O. oeni on the color and composition of Tempranillo wines

AIM: The aim of this research was to determine the influence of performing malolactic fermentation (MLF) of Tempranillo wines by coinoculation with Lactobacillus plantarum or Oenococcus oeni and Saccharomycescerevisiae on the composition and color of the final wines in comparison with sequential inoculation with Oenococcus oeni and spontaneous MLF. METHODS: Around 1500 Kg of Tempranillo grapes from Pagos de Anguix winery (Anguix, AOC Ribera de Duero, Spain) were harvested at the optimal maturity

Read More

La vinificación de las uvas aromáticas: Moscateles y Malvasías

Las uvas aromáticas se pueden dividir en dos clases, Moscateles y Malvasías, dependiendo del hecho de que el linalol o el geraniol, respectivamente, sean los alcoholes terpénicos monohidroxilados que

Read More

Root development and the performance of grapevines in response to natural as well as man‐made soil impediments

The majority of soils used for wine and table grape production in South Africa are notoriously shallow, i.e. they are restricting root penetration.

Read More