Localization of Acetyl Groups in the Macromolecule of Glucomannan Obtained from Roots of Eremurus zangezuricus

Water-soluble glucomannan from roots of Eremurus zangezuricus Mikheev was studied. The polysaccharide contains D-glucose, D-mannose, and acetyl groups in the molecular ratio of 1 : 2.8 : 0.38. ^sup 13^C NMR studies showed that the polysaccharide under study is a linear, partly acetylated 1,4-β-D-glu...

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Published inApplied biochemistry and microbiology Vol. 38; no. 5; pp. 467 - 469
Main Authors Smirnova, N I, Mestechkina, N M, Shcherbukhin, V D
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.09.2002
Subjects
Carbohydrates
Dietary fiber
Molecular biology
Plant biology
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Summary:Water-soluble glucomannan from roots of Eremurus zangezuricus Mikheev was studied. The polysaccharide contains D-glucose, D-mannose, and acetyl groups in the molecular ratio of 1 : 2.8 : 0.38. ^sup 13^C NMR studies showed that the polysaccharide under study is a linear, partly acetylated 1,4-β-D-glucomannan. The acetyl groups are attached to the C2 and C3 of mannopyranose units. The polymer contains, on average, one acetyl group per seven mannose units. The glucomannan of E. zangezuricus has the following parameters: [α]^sub D^ = -37.5°, [η] = 3.73 dl/g, and Mw = 151 kDa.[PUBLICATION ABSTRACT]
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ISSN:0003-6838
1608-3024
DOI:10.1023/A:1019976720404