is galactose a disaccharide
Lactose. Lactose is a disaccharide sugar derived from galactose and glucose that is found in milk. Lactose makes up around 2â8% of milk (by weight), although the amount varies among species and individuals, and milk with a reduced amount of lactose also exists.It is extracted from sweet or sour whey.actose is a disaccharide sugar derived from galactose and glucose that is found in milk.