An acetylated galactoglucomannan from Picea abies L. Karst

被引：68

作者：

Capek, P ^{[1
]}

Alföldi, J ^{[1
]}

Lisková, D ^{[1
]}

机构：

[1] Slovak Acad Sci, Inst Chem, SK-84238 Bratislava, Slovakia

来源：

CARBOHYDRATE RESEARCH | 2002年 / 337卷 / 11期

关键词：

Picea abies L. Karst; galactoglucomannan; O-acetyl groups; NMR spectroscopy;

D O I：

10.1016/S0008-6215(02)00090-3

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页码：1033 / 1037

页数：5

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