Current Microbiology

, Volume 51, Issue 6, pp 379–384 | Cite as

Characterization of Exopolysaccharides Produced by Cyanobacteria Isolated from Polynesian Microbial Mats

  • Laurent Richert
  • Stjepko Golubic
  • Roland Le Guédès
  • Jacqueline Ratiskol
  • Claude Payri
  • Jean Guezennec
Article

Abstract

Six cyanobacterial isolates recovered from Polynesian microbial mats, called “kopara,” were cultured using laboratory-closed photobioreactors and were shown to produce exopolymers as released and capsular exopolysaccharides (EPS). These polymers have been chemically characterized using colorimetric and elemental assays, infrared spectrometry, and gas chromatography. Both capsular and released EPS consisted of 7 to 10 different monosaccharides with neutral sugars predominating. Interestingly, four isolates exhibited sulfate contents ranging from 6% to 19%. On the basis of preliminary data, cyanobacteria from this unusual ecosystem appear to be an important source of novel EPS of a great interest in terms of their biological activities.

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Laurent Richert
    • 1
  • Stjepko Golubic
    • 2
  • Roland Le Guédès
    • 3
  • Jacqueline Ratiskol
    • 4
  • Claude Payri
    • 1
  • Jean Guezennec
    • 4
  1. 1.Laboratoire d’Ecologie MarineUniversité de la Polynésie FrançaiseFaaa, Tahiti
  2. 2.Biological Science CenterBoston UniversityBostonUSA
  3. 3.Laboratoire VP/PBA, Centre de NantesFrench Research Institute for Exploitation of the SeaNantesFrance
  4. 4.Laboratoire VP/BMM, Centre de BrestFrench Research Institute for Exploitation of the SeaPlouzaneFrance

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