sucrase /su·crase/ (soo´krās) a hydrolase that catalyzes the cleavage of the disaccharides sucrose and maltose to their component monosaccharides; it occurs complexed with α-dextrinase in the brush border of the intestinal mucosa and deficiency of the complex causes the disaccharide intolerance sucrase-isomaltase deficiency.
su·crase (s  kr s , -krz)n. See invertase. |
sucrase
an intestinal enzyme that hydrolyzes sucrose. It is not present in newborn animals so that they are unable to digest sucrose and feeding of the sugar will cause severe, osmotic diarrhea. Sucrase activity in the intestine increases as the need for, and secretion of, lactase decreases with age.
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