Structural Analysis of an Extracellular Polysaccharide Bioflocculant of Klebsiella pneumoniae(Microbiology & Fermentation Technology)

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Abstract

The glycoside composition and sequence of an extracellular polysaccharide flocculant of Klebsiella pneumoniae H12 was analyzed. GC and HPLC analysis of the acid-hydrolysate identified its constituent monosaccharides as D-Glc, D-Man, D-Gal, and D-GlcA in an approximate molar ratio of 3.9 : 1.0 : 2.3 :3.6. To analyze the glycoside sequence, the polysaccharide was partially hydrolyzed by acid and enzyme treatment. GC, HPLC, TLC, MALDI-TOF/MS, and 1H- and 13C- NMR spectroscopy characterized the obtained oligosaccharides. The results clarified the partial structure of H12 polysaccharide as a linear polymer of a unit of pentasaccharide with a side chain of one D-GlcA to D-Glc moiety (see below). Although the existence of other sequences or other constituent glycosides could not be fully excluded, H12 polysaccharide must be a novel types as such a complicated unit for a polymer has not so far been reported. The partial structure of a H12 polysaccharide flocculant is also discussed in this report. [chemical formula]

Journal

Bioscience, biotechnology, and biochemistry   [List of Volumes]

Bioscience, biotechnology, and biochemistry 66(7), 1524-1530, 2002-07-23  [Table of Contents]

Japan Society for Bioscience, Biotechnology, and Agrochemistry

References:  23

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Codes

  • NII Article ID (NAID) :
    110002693856
  • NII NACSIS-CAT ID (NCID) :
    AA10824164
  • Text Lang :
    ENG
  • Article Type :
    Journal Article
  • ISSN :
    09168451
  • NDL Article ID :
    6254126
  • NDL Source Classification :
    ZR7(科学技術--農林水産--農産) // ZR2(科学技術--生物学--生化学) // ZP1(科学技術--化学・化学工業)
  • NDL Call No. :
    Z53-G223
  • Databases :
    CJP  CJPref  NDL  NII-ELS  J-STAGE