Lactose (lactobiosis, milk sugar ) is a disaccharide consisting of the remnants of galactose and glucose. An important component of the milk of mammals and humans. It is formed in the process of lactation in the mammary gland from glucose (see) and is a source for newborns . Lactose facilitates the absorption of calcium from the intestine. The content of lactose in human milk is about 7 g / 100 ml, in the milk of cows and goats - 4.5 g / 100 ml.
See also Disaccharides .