Search results for "PARAFAC components"

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

2022

International audience; 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) occur…

PARAFAC componentsMultispectral imageMalatesWine010402 general chemistry01 natural sciencesFluorescenceAnalytical Chemistrychemistry.chemical_compoundFluorescence lifetimeOrganic acidsMalolactic fermentationPhenol[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular BiologyWineExcitation emission matrixQuenching (fluorescence)ChromatographyChemistryMalolactic fermentation010401 analytical chemistryPhasor plotTraceabilityGeneral MedicineFluorescence0104 chemical sciencesPolyphenolFermentation[SDV.AEN]Life Sciences [q-bio]/Food and NutritionFood ScienceFood Chemistry
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