title: CO2 volume fluxes outgassing from champagne glasses: the impact of champagne ageing.
abstract: It was demonstrated that CO(2) volume fluxes outgassing from a flute poured with a young champagne (elaborated in 2007) are much higher than those outgassing from the same flute poured with an older champagne (elaborated in the early 1990s). The difference in dissolved-CO(2) concentrations between the two types of champagne samples was found to be a crucial parameter responsible for differences in CO(2) volume fluxes outgassing from one champagne to another. Nevertheless, it was shown that, for a given identical dissolved-CO(2) concentration in both champagne types, the CO(2) volume flux outgassing from the flute poured with the old champagne is, in average, significantly lower than that outgassing from the flute poured with the young one. Therefore, CO(2) seems to "escape" more easily from the young champagne than from the older one. The diffusion coefficient of CO(2) in both champagne types was pointed as a key parameter to thoroughly determine in the future, in order to unravel our experimental observation.
authors.affiliation: Laboratoire d'Oenologie et Chimie Appliquée, UPRES EA 2069, URVVC, Faculté des Sciences de Reims, B.P. 1039, 51687 Reims Cedex 2, France. gerard.liger-belair@univ-reims.fr
authors.forename: Gérard
authors.initials: G
authors.lastname: Liger-Belair
authors.forename: Sandra
authors.initials: S
authors.lastname: Villaume
authors.forename: Clara
authors.initials: C
authors.lastname: Cilindre
authors.forename: Philippe
authors.initials: P
authors.lastname: Jeandet