Cellobiose

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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