Sucrose is hydrolyzed by the enzyme sucrase, an α-glucosidase in the human small intestine, to its component monosaccharides fructose and glucose.

Where can sucrase be found?

Sucrase-isomaltase (SI) is a glucosidase enzyme located on the brush border of the small intestine. It is a dual-function enzyme with two GH31 domains, one serving as the isomaltase, the other as a sucrose alpha-glucosidase.

What does sucrase do in the body?

Sucrase is the intestinal enzyme that aids in the breakdown of sucrose (table sugar) into glucose and fructose, which are used by the body as fuel. Isomaltase is one of several enzymes that help digest starches.