disaccharide

disaccharide
/duy sak"euh ruyd', -rid/, n. Chem.
any of a group of carbohydrates, as sucrose or lactose, that yield monosaccharides on hydrolysis. Also called double sugar.
[1890-95; DI-1 + SACCHARIDE]

* * *

also called  Double Sugar,  
 any substance that is composed of two molecules of simple sugars (sugar) (monosaccharides) linked to each other. Sucrose, which is formed following photosynthesis in green plants, consists of one molecule of glucose and one of fructose; lactose (milk sugar), found in the milk of all mammals, consists of glucose and galactose; and maltose, a product of the breakdown of starches during digestion, consists of two molecules of glucose. Another important disaccharide, trehalose, which is found in the circulating fluid of many insects, also consists of two molecules of glucose, but they are linked in a way such that trehalose differs from maltose.

* * *


Universalium. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • disaccharide — [ disakarid ] n. m. • 1949; de di et saccharide ♦ Sucre formé par condensation de deux monosaccharides avec élimination d une molécule d eau. Le saccharose, le lactose et le maltose sont des disaccharides. ⇒ diholoside. ● disaccharide nom… …   Encyclopédie Universelle

  • Disaccharide — (Saccharobiosen), s. Biosen …   Lexikon der gesamten Technik

  • Disaccharide — ⇒ Oligosaccharide …   Deutsch wörterbuch der biologie

  • disaccharide — [dī sak′ə rīd΄] n. any of a group of sugars with a common formula, C12H22O11, as sucrose, maltose, and lactose, which on hydrolysis yield two monosaccharides: see OLIGOSACCHARIDE …   English World dictionary

  • Disaccharide — Saccharose (Rohrzucker), das am häufigsten vorkommende Disaccharid aus Glucose und Fructose welche 1,2 verknüpft sind Disaccharide (veraltet Zweifachzucker) sind organisch chemische Verbindungen aus der Gruppe der Kohlenhydrate mit der… …   Deutsch Wikipedia

  • Disaccharide — A disaccharide or biose[1] is the carbohydrate formed when two monosaccharides undergo a condensation reaction which involves the elimination of a small molecule, such as water, from the functional groups only. Like monosaccharides, disaccharides …   Wikipedia

  • disaccharide — disacharidas statusas T sritis chemija apibrėžtis Du monosacharidai, susijungę glikozidiniu ryšiu. atitikmenys: angl. disaccharide rus. дисахарид …   Chemijos terminų aiškinamasis žodynas

  • disaccharide — noun Date: 1889 any of a class of sugars (as sucrose) that yields on hydrolysis two monosaccharide molecules …   New Collegiate Dictionary

  • Disaccharide — Diholoside Le saccharose, est un diholoside formé par 2 oses : le D glucose (à gauche) et le D fructose (à droite). Les diholosides sont des sucres formés par deux oses (sucres simples non hydrolysables). Si l on suit une nomenclature… …   Wikipédia en Français

  • disaccharide — Sugar formed from two monosaccharide units linked by a glycosidic bond. The trehalose type are formed from two non reducing sugars, the maltose type from two reducing sugars …   Dictionary of molecular biology

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”