Cellobiose

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ImageFile = Cellobiose.svg
OtherNames =
Formula = C12H22O11
PubChem = 294
MolarMass=342.30
CASNo = 16462-44-5
Density=
MeltingPt=
BoilingPt=
Solubility = 12 g/100mL

Cellobiose is a disaccharide with the formula [HOCH2CHO(CHOH)3] 2O. The molecule is derived from the condensation of two glucose molecules linked in a β(1→4) bond. It can be hydrolyzed by bacteria or cationic ion exchange resins [ [http://cancerweb.ncl.ac.uk/cgi-bin/omd?query=cellobiose&action=Search+OMD Cancerweb.ncl.ac.uk] ] to give glucose. Cellobiose has eight free alcohol (COH) groups and three ether linkages, which give rise to strong -inter- and intra-molecular hydrogen bonds

It can be obtained by enzymatic or acidic hydrolysis of cellulose and cellulose rich materials such as cotton, jute, or paper. Cellulose is a polymer of glucose units linked by β(1→4) bonds.

Treatment of cellulose with acetic anhydride and sulfuric acid, gives cellobiose tetraacetate, which cannot engage in hydrogen bonding and is soluble in nonpolar organic solvents. [Braun, G. "α-Cellobiose Octaacetate" Organic Syntheses, Collected Volume 2, p.124 (1943). [http://www.orgsyn.org/orgsyn/pdfs/CV2P0124.pdf] ]

References

External links

*http://www.chemthes.com/entity_datapage.php?id=3752


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Look at other dictionaries:

  • Cellobiose — Structure chaise du Cellobiose Général Nom IUPAC β D glucopyranosyl (1→4) D glucopyranose …   Wikipédia en Français

  • cellobiose — ● cellobiose nom masculin Diholoside C12H22O11, formé au cours de l hydrolyse de la cellulose. ⇒CELLOBIOSE, subst. masc. Sucre provenant de l hydrolyse de la cellulose. Fucose et cellobiose, très sucrés pour elle, ne peuvent contribuer à l… …   Encyclopédie Universelle

  • Cellobiose — Strukturformel Allgemeines Name Cellobiose Andere Namen …   Deutsch Wikipedia

  • Cellobiose — Cel|lo|bi|o|se [Kurzw. aus ↑ Cellulose u. ↑ biose], die; ; Syn.: 4 O β D Glucopyranosyl D glucose: im Gegensatz zur stereoisomeren ↑ Maltose geschmackloses ↑ Disac …   Universal-Lexikon

  • cellobiose — celobiozė statusas T sritis chemija apibrėžtis Disacharidas, susidedantis iš dviejų gliukozės liekanų, sudedamoji celiuliozės dalis. atitikmenys: angl. cellobiose rus. целлобиоза …   Chemijos terminų aiškinamasis žodynas

  • cellobiose — noun Etymology: International Scientific Vocabulary cellulose + o + biose disaccharide, from 1bi + 2 ose Date: 1902 a faintly sweet disaccharide C12H22O11 obtained by partial hydrolysis of cellulose …   New Collegiate Dictionary

  • cellobiose — Reducing disaccharide composed of two D glucose moieties b 1,4 linked. The disaccharide subunit of cellulose, though not found as a free compound in vivo …   Dictionary of molecular biology

  • cellobiose — /sel oh buy ohs/, n. a white, crystalline, water soluble disaccharide, C12H22O11, that is obtained by the breakdown of cellulose or lichenin and yields glucose upon hydrolysis: used chiefly in bacteriology as a reagent. [1900 05; CELL(ULOSE) + O… …   Universalium

  • cellobiose — noun A disaccharide, found only as a repeat unit in cellulose, in which two glucose units are joined with a 1, 4 β linkage …   Wiktionary

  • cellobiose — A disaccharide obtained from cellulose and lichenin; a glucose β(1→4) glucoside, differing only from maltose in the nature of the glycosidic bond. * * * cel·lo·bi·ose .sel ə bī .ōs, .ōz n a faintly sweet disaccharide C12H22O11 obtained by partial …   Medical dictionary

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