Which disaccharide is produced by the action of alpha-amylase on starch in the mouth? which disaccharide is produced by the action of alpha-amylase on starch in the mouth? lactose maltose sucrose cellobiose?

Enzymes are biocatalysts of metabolic reactions. Amylase is an anzyme which is involved in catalyzing the hydrolysis of starch into sugars. It aids in the process of chemical digestion of the food. Alpha amylases are produced by the salivary glands of the mouth and the pancrease of the body.

The correct option is option (b) maltose. The disaccharide produced by the action of the alpha-amylase on starch in the mouth is maltose. The alpha amylase produced by the salivary gland is called the ptyalin. It is a type of hydrolase that breaksdown the complex sugars like starch into simple sugars like maltose or glucose. The ions like calcium and chloride, the amino acids of the enzyme play an important role in the hydrolysis. It acts on the alpha-1,4 - glycosidic bonds forming the disaccharide maltose.

Thus, maltose is the disaccharide produced by the action of alpha-amylase on starch in the mouth.