Structural Studies on a New Water-absorbing Polysaccharide from the Family Oxalobacteraceae

The chemical structure of a new water-absorbing polysaccharide (WAP), which was isolated from a liquid culture of bacterium belonging to the family Oxalobacteraceae, was analyzed by fragmentation analysis and methylation techniques. Mild acid hydrolysis of WAP gave six di-, four tri-, two tetra-, tw...

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Veröffentlicht in:Journal of Applied Glycoscience 2007, Vol.54(4), pp.203-209
Hauptverfasser: Ogawa, Kazutoshi, Ikeda, Yoko, Umemura, Kazuyuki
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container_title Journal of Applied Glycoscience
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creator Ogawa, Kazutoshi
Ikeda, Yoko
Umemura, Kazuyuki
description The chemical structure of a new water-absorbing polysaccharide (WAP), which was isolated from a liquid culture of bacterium belonging to the family Oxalobacteraceae, was analyzed by fragmentation analysis and methylation techniques. Mild acid hydrolysis of WAP gave six di-, four tri-, two tetra-, two penta-, and one hexasaccharides composed of mannose, glucose and/or galactose. These structures were elucidated by extensive 2D NMR spectroscopic analyses. The structure of the WAP has been proposed to have a new heptasaccharide as a repeating unit, →4)-β-D-Glcp-(1→4)-β-D-Manp-(1→4)-β-D-Glcp-(1→4)-[β-D-Galp-(1→3)-β-D-Glcp-(1→3)-β-D-Galp-(1→3)]-β-D-Galp-(1→.
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subjects oligosaccharides
Oxalobacteraceae
polysaccharide
water-absorbing polysaccharide
title Structural Studies on a New Water-absorbing Polysaccharide from the Family Oxalobacteraceae
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