Sucrose A disaccharide composed

Sugar crops deliver mainly two types of sugar which can be used for industrial purposes-sucrose, a disaccharide composed by one glucose and one fructose monomer, and inulin, a polysaccharid. The latter can be obtained from topinam-bur (Hdianthus tuberosus) but is only of minor commercial importance. One example for such an application is the production of diets for diabetics [lOj. 

Acetal and ketal linkages are widely foimd in nat-inal sugars and polysaccharides. The structure of sucrose is a splendid example. Sucrose is a disaccharide, composed of two linked monosaccharide imits, glncose in pyranose ring form and frnctose in fmanose ring form. As we have seen above,... 

Common table sugar, sucrose, is a disaccharide composed of a hexose form of glucose bonded to a pentose form of fructose. 

Di-, tri- and tetrasaccharides These carbohydrates are dimers, trimers and tetramers of monosaccharides, and are formed from two, three or four monosaccharide molecules, with the elimination of one, two or three molecules of water. For example, sucrose is a disaccharide composed of two monosaccharides, glucose and fructose. 

Sucrose [57-50-1] ( 3-D-fructofuranosyl-0t-D-glucopyranoside), formula weight 342.3, is a disaccharide composed of glucose and fmctose... 

D-Glucose in various views (stick and space-filling) from the web. Disaccharides are formed when two monosaccharides are chemically bonded together. Sucrose, a common plant disaccharide is composed of the monosaccharides glucose and fructose. Lactose, milk sugar, is a disaccharide composed of glucose and the monosaccharide galactose. 

Sucrose is a disaccharide composed of glucose and fructose. As described (p. 318) the oxidation of 1 mol of glucose yields a maximum of 31 mol of ATP. Fructose, which like glucose is also partially degraded by the glycolytic pathway, also yields a maximum of 31 mol ATP. The total maximum energy yield is 62 mol of ATP per mole of sucrose. 

Sucrose, in contrast, is a disaccharide of almost universal appeal and tolerance. Produced by many higher plants and commonly known as table sugar, it is one of the products of photosynthesis and is composed of fructose and glucose. Sucrose has a specific optical rotation, of +66.5°, but an... 

Two monosaccharides bonded together comprise a disaccharide. Three common disaccharides are sucrose (common table sugar), maltose, and lactose. Sucrose is composed of glucose and fhictose. Maltose is composed of two glucose molecules. Lac-... 

Sucrose is a disaccharide that is composed of a unit of glucose (acetal form) and a unit of fructose (ketal form) linked through C-1 of glucose and C-2 of fructose, i.e. a 1,2 link. In sucrose, neither glucose nor fructose can exist in open chain form because of the formation of acetal and ketal as shown below. As a result, sucrose is not a reducing sugar, and does now exhibit mutarotation. The specific rotation [a]D of sucrose is +66°. 

Important disaccharides include lactose and sucrose. Lactose is a disaccharide of p-D-galactose bonded p(l 4) with D-glucose. In galactosemia, defective metabolism of galactose leads to accumulation of a toxic by-product. The ill effects of galactosemia are avoided by exclusion of milk and milk products from the diet of affected infants. Sucrose is a dimer composed of a-D-glucose bonded (al —> p2) with p-D-fructose. 

---