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glucan

Tuesday 13 October 2009

Definition: A glucan molecule is a polysaccharide of D-glucose monomers linked by glycosidic bonds. Many beta-glucans are medically important.

Types

The α- and β- and numbers clarify the type of O-glycosidic bond.

Alpha glucan

- dextran, α-1,6-glucan
- glycogen, α-1,4- and α-1,6-glucan
- pullulan, α-1,4- and α-1,6-glucan
- starch, α-1,4- and α-1,6-glucan

Beta glucan

- cellulose, β-1,4-glucan
- curdlan, β-1,3-glucan
- laminarin, β-1,3- and β-1,6-glucan
- chrysolaminarin, β-1,3-glucan
- lentinan, a strictly purified β-1,6:β-1,3-glucan from Lentinus edodes
- lichenin, β-1,3- and β-1,4-glucan
- pleuran, β-1,3- and β-1,6-glucan isolated from Pleurotus ostreatus
- zymosan, β-1,3-glucan

See also

- polysaccharides