Glycosidic linkage between ${\mathrm{C}}_1$ of $\mathrm{\alpha }$-glucose and ${\mathrm{C}}_2$ of $\mathrm{\beta }$-fructose is found in

Sucrose

Sucrose is composed of a molecule of glucose joined to a molecule of fructose by an $\mathrm{\alpha }-1, \mathrm{\beta }-2$-gIycosidic linkage.

 

Mannose is a sugar monomer of the aldohexose series of carbohydrates. It is a $\mathrm{C}-2$ epimer of glucose.

Fructose, or fruit sugar, is a ketonic simple sugar found in many plants, where it is often bonded to glucose to form the disaccharide sucrose.

Lactose is composed of a molecule of galactose joined to a molecule of glucose by a $\beta -1, 4$-gIycosidic linkage. It is a reducing sugar that is found in milk.