Sulfossol distinctive feature is that it simultaneously provides must or harvest with the SO2 and ammoniacal nitrogen necessary for smooth fermentation. It provides yeast with part of the nitrogen needed for their growth.
Sulfossol provides the SO2 essential for vinification:
Protection against enzymatic oxidation (tyrosinase, etc).
Inhibition of bacteria and apiculate yeasts.
Promotes extraction of phenolic compounds during red wine maceration.