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Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula C. 12H. 22O. 11. For human consumption, sucrose is extracted and refined from either sugarcane or sugar beet.
structure summary. In enzymology, a sucrose synthase (EC 2.4.1.13) is an enzyme that catalyzes the chemical reaction. NDP-glucose + D-fructose ⇌ NDP + sucrose. Thus, the two substrates of this enzyme are NDP-glucose and D-fructose, whereas its two products are NDP and sucrose. This enzyme belongs to the family of glycosyltransferases ...
Sucrase. Sucrases are digestive enzymes that catalyze the hydrolysis of sucrose to its component monosaccharides, fructose and glucose. One form, sucrase-isomaltase, is secreted in the small intestine on the brush border. [1] The enzyme invertase, which occurs more commonly in plants, fungi and bacteria, also hydrolyzes sucrose (and other ...
The iron sucrose molecule is a polymer with two main molecules; sucrose (chemical formula C 12 H 22 O 11) and an iron (III) hydroxide (Na 2 Fe 5 O 8 •3 (H 2 O)). These two components are in solution together, but are not bound to one another. [2] Iron sucrose is a type II complex, with two oxygen atoms bonded to each iron atom. [3]
Sucrose esters or sucrose fatty acid esters are a group of non-naturally occurring surfactants chemically synthesized from the esterification of sucrose and fatty acids (or glycerides). This group of substances is remarkable for the wide range of hydrophilic-lipophilic balance (HLB) that it covers. The polar sucrose moiety serves as a ...
The molecular structure of α-lactose, as determined by X-ray crystallography. Lactose crystals, viewed under polarized light. Lactose is a disaccharide composed of galactose and glucose, which form a β-1→4 glycosidic linkage. Its systematic name is β-D-galactopyranosyl-(1→4)-D-glucose.
The stereochemical structure of a cyclic monosaccharide can be represented in a Haworth projection. In this diagram, the α-isomer for the pyranose form of a D -aldohexose has the −OH of the anomeric carbon below the plane of the carbon atoms, while the β-isomer has the −OH of the anomeric carbon above the plane.
Glucose is a monosaccharide containing six carbon atoms and an aldehyde group, and is therefore an aldohexose. The glucose molecule can exist in an open-chain (acyclic) as well as ring (cyclic) form. Glucose is naturally occurring and is found in its free state in fruits and other parts of plants.