Journal
CARBOHYDRATE RESEARCH
Volume 337, Issue 11, Pages 1033-1037Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0008-6215(02)00090-3
Keywords
Picea abies L. Karst; galactoglucomannan; O-acetyl groups; NMR spectroscopy
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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-->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 O-acetylated at C-2 and C-3 in 1.7:1 mole proportion. (C) 2002 Elsevier Science Ltd. All rights reserved.
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