CO2 volume fluxes outgassing from champagne glasses: The impact of champagne ageing

摘要

It was demonstrated that CO2 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-CO2 concentrations between the two types of champagne samples was found to be a crucial parameter responsible for differences in CO2 volume fluxes outgassing from one champagne to another. Nevertheless, it was shown that, for a given identical dissolved-CO2 concentration in both champagne types, the CO2 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, CO2 seems to "escape" more easily from the young champagne than from the older one. The diffusion coefficient of CO2 in both champagne types was pointed as a key parameter to thoroughly determine in the future, in order to unravel our experimental observation.