DisaccharidesDisaccharides are sugar units containing two monosaccharides linked by a covalent bond called glycosidic bond. Maltose, sucrose, and lactose are examples of disaccharides. Maltose is formed by the linkage of two glucose molecules by a glycosidic bond. Sucrose is a combination of glucose and fructose. Lactose is composed of glucose and galactose. The hydrolysis of disaccharides gives their corresponding monosaccharide subunits.
Figure: The structure of maltose
Figure: The structure of sucrose
Figure: The structure of lactose