An acetylated galactoglucomannan from Picea abies L. Karst
2002
Capek, P. | Alfoldi, J. | Liskova, D.
A water-soluble galactoglucomannan composed of D-galactose, D-glucose, and D-mannose in 1:3:17 mole proportion has been isolated from the secondary cell walls of Picea abies L. Karst. About 33% of the polysaccharide units were substituted by acetyl groups. Structural studies of the polymer indicated a beta-(1 to 4)-linked glucomannopyranosyl backbone with a low content of branch points at O-6 of mannosyl and glucosyl residues. A preference for mannosyl groups indicates the presence of a single D-galactosyl unit side-chain. About half of the mannose residues were omicron-acetylated at C-2 and C-3 in 1.7:1 mole proportion.
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