Question

Which type of linkage is present in maltose?

• A. $\alpha 1\to 4$ glycosidic linkage
• B. $\beta 1\to 4$ glycosidic linkage
• C. $\alpha 1\to 2\beta$ glycosidic linkage
• D. $\alpha 1\to 6$ glycosidic linkage

Answer 1

The correct option is A $\alpha 1\to 4$ glycosidic linkage

The glucose units in maltose are joined in a head to tail fashion through an alpha linkage from the first carbon atom of one glucose molecule to the fourth carbon atom of the second glucose molecule. The bond from the anomeric carbon of the first monosaccharide unit is directed downward, which is why this is known as alpha glycosidic linkage.

So, option A is the correct option.