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disaccharidase/di·sac·cha·ri·dase/ (di-sak´ah-rĭ-dās″) an enzyme that catalyzes the hydrolysis of disaccharides.
An enzyme, such as invertase or lactase, that catalyzes the hydrolysis of disaccharides to monosaccharides.
in humans, the enzyme that hydrolyzes disaccharides. The disaccharidases are located in the brush border membrane of the small intestine and hydrolyze the oligosaccharides and disaccharides produced after luminal digestion of starches and other carbohydrates. See also disaccharide intolerance.
any of a group of enzymes which are components of the brush border of the intestinal epithelium and which hydrolyze disaccharides to monosaccharides. They include lactase, maltase, sucrase and galactosidase. Enteric infections may cause a temporary deficiency of lactase leading to the development of an osmotic-type diarrhea. All disaccharidases are not present immediately following birth and feeding sucrose to young calves will result in diarrhea.