In which disaccharide glucosidic linkage is formed between anomeric –OH of glucose and anomeric –OH of fructose?

Sucrose

The correct answer is option 4. sucrose.

Sucrose is a disaccharide that is made up of glucose and fructose. The glycosidic linkage in sucrose is between the anomeric -OH of glucose and the anomeric -OH of fructose. This linkage is called an \(\alpha\)-1,2-glycosidic linkage.

The other options are incorrect. Lactose is a disaccharide that is made up of glucose and galactose. The glycosidic linkage in lactose is between the anomeric -OH of glucose and the anomeric -OH of galactose. This linkage is called a \(\beta\)-1,4-glycosidic linkage. Maltose is a disaccharide that is made up of two glucose molecules. The glycosidic linkage in maltose is between the anomeric -OH of one glucose molecule and the anomeric -OH of another glucose molecule. This linkage is called an \(\alpha\)-1,4-glycosidic linkage. Cellobiose is a disaccharide that is made up of two glucose molecules. The glycosidic linkage in cellobiose is between the anomeric -OH of one glucose molecule and the anomeric -OH of another glucose molecule. This linkage is also called an \(\alpha\)-1,4-glycosidic linkage.