Cellobiose also contains two D-glucose subunits. The only difference from maltose is that the two glucose subunits are joined through a β -1,4'-glycosidic linkage.
Lactose , a disaccharide present in milk, contains D-galactose (non-reducing) and D-glucose (reducing) monosaccharide units. These units are hooked together by a β -1,4'-glycosidic linkage.
1-6' Glycosides : The anomeric carbon of one unit hooked by the oxygen of the terminal carbon (C-6) of another monosaccharide unit. Example, gentiobiose is a sugar with two glucose units joined by a β -1,6'-glucosidic linkage.
1-2' Glycosides : The glycosidic bond is hooked between the two anomeric carbon of the monosaccharide units. For example, sucrose contains a D-glucose subunit and a D-fructose subunit, which have been joined by a glycosidic bond between C-1 of glucose (in the α -position) and C-2 of fructose (in the β- position).
