Galactoglucomannan is a water-soluble hemicellulose, consisting of galactose, glucose and mannose. Many softwood species, e.g. Norway spruce are rich of galactoglucomannans and can contain it up to 10–20%.[1]

Structure

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Structure of galactoglucomannan

Galactoglucomannan consists of a backbone of randomly distributed (1→4)-linked mannose and glucose units with (1→6)-linked galactose units attached to mannose units. The hydroxyl groups in locations C2 and C3 in mannose are partially substituted by acetyl groups.

References

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  1. ^ Willför, Stefan; Sundberg, Kenneth; Tenkanen, Maija; Holmbom, Bjarne (2008). "Spruce-derived mannans -- a potential raw material for hydrocolloids and novel advanced natural materials". Carbohydrate Polymers. 72 (2): 197–210. doi:10.1016/j.carbpol.2007.08.006.


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Hemicellulose

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Glucomannan

Glucomannan with α-(1→6)-linked galactose units in side branches is called galactoglucomannan.[citation needed] In the yeast cell wall, mannan oligosaccharides

Wood-decay fungus

white-rot fungi. The prevalent hemicellulose found in soft wood trees is Galactoglucomannan, a molecule made up of b-1,4-linked D-mannopyranose and D-glucopyranose

Mannans

polysaccharide. Ivory nut is a source of mannans. An additional type is galactoglucomannan found in soft wood with a mixed mannose/glucose β(1-4) backbone.[citation

Glycoside hydrolase family 26

4-beta-D-linkages in mannans, galacto-mannans, glucomannans and galactoglucomannans. Henrissat B, Callebaut I, Fabrega S, Lehn P, Mornon JP, Davies G