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

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Abstract

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. 13C 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]D = –37.5°, [η] = 3.73 dl/g, and Mw = 151 kDa.

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Authors and Affiliations

  1. Bach Institute of Biochemistry, Russian Academy of Sciences, Leninskii pr. 33, Moscow, 119071, Russia

    N. I. Smirnova, N. M. Mestechkina & V. D. Shcherbukhin

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  1. N. I. Smirnova
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  2. N. M. Mestechkina
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  3. V. D. Shcherbukhin
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Smirnova, N.I., Mestechkina, N.M. & Shcherbukhin, V.D. Localization of Acetyl Groups in the Macromolecule of Glucomannan Obtained from Roots of Eremurus zangezuricus . Applied Biochemistry and Microbiology 38, 467–469 (2002). https://doi.org/10.1023/A:1019976720404

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