disaccharidase
Dictionary:
di·sac·cha·ri·dase (dī-săk'ər-ĭ-dăs', -dāz') 
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n.
An enzyme, such as invertase or lactase, that catalyzes the hydrolysis of disaccharides to monosaccharides.
| 5min Related Video: disaccharidase |
| Food and Nutrition: disaccharidases |
Enzymes that hydrolyse disaccharides to their constituent monosaccharides in the intestinal mucosa: sucrase (also known as invertase) acts on sucrose and isomaltose, lactase on lactose, maltase on maltose, and trehalase on trehalose.
| Veterinary Dictionary: disaccharidase |
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.
| Wikipedia: Disaccharidase |
Disaccharidases are a type of glycoside hydrolases, enzymes that break down disaccharides into monosaccharides.
Examples of disaccharidases
- Lactase (breaks down lactose into glucose and galactose)
- Maltase (breaks down maltose into 2 glucoses)
- Sucrase (breaks down sucrose into glucose and fructose)
- Trehalase (breaks down trehalose into 2 glucoses)
For a thorough scientific overview of small-intestinal disaccharidases, one can consult chapter 75 of OMMBID.[1] For more online resources and references, see inborn error of metabolism.
External links
References
- ^ Charles Scriver, Beaudet, A.L., Valle, D., Sly, W.S., Vogelstein, B., Childs, B., Kinzler, K.W. (Accessed 2007). The Online Metabolic and Molecular Bases of Inherited Disease. New York: McGraw-Hill. - Summaries of 255 chapters, full text through many universities. There is also the OMMBID blog.
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 | lactose |
| nonmilk |
| Lactose Intolerance |
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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 2009. 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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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Disaccharidase". Read more |
