See invertase.
[French sucre, sugar (from Old French sukere; see sugar) + –ASE.]
sucrase
Dictionary:
su·crase (sū'krās', -krāz')  |
| 5min Related Video: sucrase |
| Food and Nutrition: sucrase |
The enzyme that hydrolyses sucrose to yield glucose and fructose (invert sugar). Also known as invertase or saccharase.
| Veterinary Dictionary: 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.
| WordNet: sucrase |
Note: click on a word meaning below to see its connections and related words.
The noun has one meaning:
Meaning #1:
an enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose
Synonyms: invertase, saccharase
| Wikipedia: Sucrase |
Sucrase is the name given to a number of enzymes that catalyse the hydrolysis of sucrose to fructose and glucose.
Contents |
Types
Physiology
Sucrose intolerance (also known as Congenital Sucrase-Isomaltase Deficiency (CSID) or Sucrase-isomaltase deficiency) occurs when sucrase is not secreted in the small intestine. With sucrose intolerance, the result of consuming sucrose is excess gas production and often diarrhea and malabsorption.
Sucrase is secreted by the tips of the villi of the epithelium in the small intestine. Its levels are reduced in response to villi-blunting events such as celiac sprue and the inflammation associated with the disorder. The levels increase in Pregnancy/Lactation and Diabetes as the villi hypertrophy.
Use in chemical analysis
Sucrose itself is a non-reducing sugar, having the reducing aldehyde group involved in the glycosidic bond, and therefore will not test positive with Benedict's solution. In order to test for sucrose, the enzyme sucrase is mixed with the sample. The sucrose is hydrolysed into glucose and fructose, with glucose being a reducing sugar, which will test positive with Benedict's solution. Fructose can be isomerized to glucose by the addition of NaOH or other strong base.
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Learn More
 | invertase |
| saccharases |
| disaccharidases |
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Copyrights:
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more |
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| Food and Nutrition. A Dictionary of Food and Nutrition. Copyright © 1995, 2003, 2005 by A. E. Bender and D. A. Bender. All rights reserved. Read more |
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| Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sucrase". Read more |
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