海洋細菌NAM-1の生産するフラクタンの構造解析〔英文〕

概要

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Marine bacterium NAM-1 strain produced a extracellular polysaccharide on sea water agar medium containing sucrose. The homogeneous, neutral and high molecular weight polysaccharides contain only fructose as the constituent. The structure of this polysaccharide has been investigated by using the techniques of methylation analysis, periodate oxidation and 13C-NMR spectroscopy. The principal feature of the 13C-NNR spectrum consists in the six intense signals which have been completely assigned. It is evident from the 13C-NMR analysis that sugar residues of this polysaccharide are fructofuranosidic and β-linked. Methylation analysis indicates that NAM-1 is composed of fructofuranosyl repeating units having twenty four (2-6) linked sugar residues, one branching point and one terminal.
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