sucrase


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sucrase

 [soo´krās]
a digestive enzyme secreted in the intestine that catalyzes the hydrolysis of sucrose and maltose to produce glucose and fructose.

su·crose α-d-glu·co·si·dase

(sū'krōs glū'kō-hī'drō-lās),
An enzyme catalyzing the hydrolysis of sucrose and maltose. The enzyme isolated from the intestinal mucosa will also act on isomaltose (that is, it contains a subunit that acts on isomaltose separately). A deficiency of this enzyme results in defective digestion of sucrose and linear α 1,4-glucans
Synonym(s): sucrase

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.

sucrase

(so͞o′krās′, -krāz′)
n.

su·crose al·pha-d-glu·co·hy·dro·lase

(sū'krōs al'fă glū'kō-hī'drō-lās)
An enzyme hydrolyzing sucrose and maltose in a complex with isomaltase; hence, hydrolyzes both sucrose and isomaltose; found in the intestinal mucosa; a deficiency of this enzyme results in defective digestion of sucrose and linear α1,4-glucans.
Synonym(s): sucrase.

sucrase

or

invertase

an enzyme that catalyses the hydrolysis of SUCROSE into GLUCOSE and FRUCTOSE. Sucrase is contained in the SUCCUS ENTERICUS.

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.
References in periodicals archive ?
In assessing the effect of feed restriction between 7 and 14 days of life in broiler chickens, an increase was reported in maltase and sucrase activity immediately after the restriction period (18).
Seri, et al, (25) demonstrated the specificity of L-arabinose as a sucrase inhibitor and how this compound can successfully prevent plasma glucose levels from rising after sucrose loading.
This inhibitory effect is analogous to the previous observation on the hydrolytic activity of rat intestinal sucrase, an [alpha]-oligosaccharase (Hun-Opfer and Mata-Segreda 1994); despite the fact that lactase is a [beta]-oligosaccharase.
Finally, sucrase levels seem barely adequate relative to sucrose intake, and low extraction levels of starch suggest that pancreatic amylase is inadequate.
Similarly, patients with congenital sucrase deficiency experience an improvement in gastrointestinal symptoms when they avoid sucrose-containing foods.
In rats, fed ginger (50 mg% for 8 weeks) enhanced pancreatic lipase activity was found (Platel and Srinivasan, 2000) and also enhanced intestinal lipase, disaccharidases, sucrase and maltase activities (Platel and Srinivasan, 1996).
Substitution of up to 60% of the corn or cereal grains in the diet with cane sugar does not appear to be associated with reduced performance of growing pigs, but suckling age pigs (less than 3 wk of age) cannot tolerate cane sugar because their secretion of the digestive enzyme, sucrase, is not yet available in sufficient quantity to hydrolyze the sucrose contained in cane sugar to its constituent simple sugars, glucose and fructose.
It was believed that the inclusion of molasses in the starter concentrate could increase the incidence of scores indicative of diarrhea, since there is no sucrase activity in calves up to 44 days (Huber et al.
Sucrase activity was measured by Na2S2O3 titration method, protease activity was measured by ninhydrin colorimetry method, polyphenoloxidase activity was measured by iodine titrimetry method, phosphatase activity was measured by disodium phenyl phosphate colorimetric method (in pH 8.
For those whose glucose levels remain unacceptably high despite taking the powdered drink mix, there are encapsulated nutrients that work to specifically block the sucrase and glucosidase digestive enzymes.
genetic expression of endopeptidases had been reported as early as 17 days in the mouse embryo and continued to increase by 19th day [13,16] It had been reported that using molds , as a probiotic To mice feed had increased brush--border enzyme activities like Sucrase , alkaline phosphatase and lecine amino peptidase [4, 12].