Going through the wine fining: Intimate dialogue between organics and clays - Sorbonne Université Access content directly
Journal Articles Colloids and Surfaces B: Biointerfaces Year : 2018

Going through the wine fining: Intimate dialogue between organics and clays

Abstract

Wine chemistry inspires and challenges with its complexity and intriguing composition. In this context, the composites based on the use of a model protein, a polyphenol of interest and montmorillonite in a model hydroalcoholic solution have been studied. A set of experimental characterization techniques highlighted the interactions between the organic and the inorganic parts in the composite. The amount of the organic part was determined by ultraviolet-visible (UV–VIS) and thermal analysis. X-ray diffraction (XRD) and transmission electronic microscopy (TEM) informed about the stacking/exfoliation of the layers in the composites. Vibrational and nuclear magnetic resonance spectroscopies methods stressed on the formation of a complex between the protein and the polyphenol before adsorption on the clay mineral. The mobility/rigidity of the organic parts were determined by fluorescence time resolved spectroscopy. Changes in the secondary structure of the protein occured upon complexation with polyphenol on clay mineral due to strong interactions. Although not representating faithfully enological conditions, these results highlight the range and nature of mechanisms possibly involved in wine fining.
Fichier principal
Vignette du fichier
JABER_Maguy.pdf (2.19 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01744266 , version 1 (27-03-2018)

Identifiers

Cite

Pollyana Trigueiro, Silvia Pedetti, Baptiste Rigaud, Sebastien Balme, Jean-Marc Janot, et al.. Going through the wine fining: Intimate dialogue between organics and clays. Colloids and Surfaces B: Biointerfaces, 2018, 166, pp.79 - 88. ⟨10.1016/j.colsurfb.2018.02.060⟩. ⟨hal-01744266⟩
513 View
276 Download

Altmetric

Share

Gmail Facebook X LinkedIn More