Svovldioxid/sulfitter (E 220-228) tilsættes for at standse iltning og hæmme væksten af mikroorganismer, hvilket resulterer i, at produkternes farve og smag bedre bevares.
Sulphur dioxide — sulphites (E 220-228) are added to stop oxidation and to prevent microbiological contaminations, resulting in a better preservation of flavour and colour of the products.