Disaccharide: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
A disaccharide is a [[Carbohydrate|carbohydrate]] [[Polymer|polymer]] composed of two sugar [[Monomers|monomers]] which are joined by a [[Glycosidic bond|glycosidic bond]] formed by a [[Condensation reaction|condensation reaction]]. Maltose | A disaccharide is a [[Carbohydrate|carbohydrate]] [[Polymer|polymer]] composed of two sugar [[Monomers|monomers]] (monosaccharides) which are joined by a [[Glycosidic bond|glycosidic bond]] formed by a [[Condensation reaction|condensation reaction]]. Disaccharides are the simplest forms of polysaccharides. | ||
Examples of disaccharides: | |||
Maltose: two monomers of alpha-[[Glucose|glucose]] joined by an alpha 1,4 [[Glycosidic bond|glycosidic bond]]. | |||
Lactose: one galactose monomer and one glucose molecule joined by a beta 1,4 glycosidic bond. Lactose is the major sugar in milk. | |||
Sucrose: one glucose monomer and one fructose monomer joined by an alpha 1,2 glycosidic bond. Sucrose is a product of photosynthesis in plants. | |||
References: | |||
Molecular Cell Biology 2013 (Seventh Edition) Lodish et al page 39 | |||
Revision as of 13:55, 22 October 2013
A disaccharide is a carbohydrate polymer composed of two sugar monomers (monosaccharides) which are joined by a glycosidic bond formed by a condensation reaction. Disaccharides are the simplest forms of polysaccharides.
Examples of disaccharides:
Maltose: two monomers of alpha-glucose joined by an alpha 1,4 glycosidic bond.
Lactose: one galactose monomer and one glucose molecule joined by a beta 1,4 glycosidic bond. Lactose is the major sugar in milk.
Sucrose: one glucose monomer and one fructose monomer joined by an alpha 1,2 glycosidic bond. Sucrose is a product of photosynthesis in plants.
References:
Molecular Cell Biology 2013 (Seventh Edition) Lodish et al page 39