Skip to Main content Skip to Navigation
Journal articles

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

Abstract : In this study, stationary and time-resolvedfluorescence signatures, were statistically and chemometrically analyzed among three typologies of Chardonnay wines (A, B and C) 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), andfluorescence decays (N = 22), mathematically fitted, using the conventional exponential modeling and the phasor plot representation. Wine PARAFAC component C4 coupledwith its phasor plot g and s values enable the description of malolactic fermentation (MLF) occurrence in Chardonnay wines. Such proxies reflect wine concentration modifications in total acidity, malic/lactic and phenol acids.Lower g values among fresh MLF + wines compared to MLF- wines are explained by a quenching effect on wine fluorophores by both organic and phenolic acids.The combination of multispectral fluorescence parametersopens a novel routinely implementable methodology to diagnose fermentative processes.
Complete list of metadata

https://hal-agrosup-dijon.archives-ouvertes.fr/hal-03430039
Contributor : Admin Agrosupdijon Connect in order to contact the contributor
Submitted on : Tuesday, November 16, 2021 - 9:03:03 AM
Last modification on : Monday, December 6, 2021 - 10:46:18 AM

Identifiers

Citation

Maxime Pacheco, Pascale Winckler, Ambroise Marin, Jean-Marie Perrier-Cornet, Christian Coelho. Multispectral fluorescence sensitivity to acidic and polyphenolic changes in Chardonnay wines – The case study of malolactic fermentation. Food Chemistry, Elsevier, 2022, 370, pp.131370. ⟨10.1016/j.foodchem.2021.131370⟩. ⟨hal-03430039⟩

Share

Metrics

Record views

30