The two monosaccharides are joined together by an oxide linkage formed by the loss of a water molecule. Such a linkage between two monosaccharide units through oxygen atom is called glycosidic linkage. In disaccharides, if the reducing groups of monosaccharides i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars, e.g., sucrose. On the other hand, sugars in which these functional groups are free, are called reducing sugars, for example, maltose and lactose. A non reducing disaccharide 'A on hydrolysis with dilute acid gives an equimolar mixture of D-(+)glucose and D-(+)-Fructose.

Name the linkage that holds the two units in the disaccharide?

Options

A. Nucleoside linkage
B. Glycosidic linkage
C. Peptide linkage
D. None of the above

Answer

B

Explanation

The linkage which holds the two monosaccharide units through oxygen atom is called glycosidic linkage.