[The obtaining of base wines for champenois sparkling wines]

bentonita bentonite botrytis cinerea champagne and sparkling wines champagne et vin mousseux chemical composition clay minerals composition chimique composizione chimica decoloration decolorazione fermentation fermentazione grapes minerales de arcilla organoleptic properties ph prensado pressage pressatura pressing proteine proteins raisin refrigeration refrigerazione tirosina tyrosine uva vinification vinificazione winemaking