title: Partial characterization of an exopolysaccharide secreted by a marine bacterium, Vibrio neocaledonicus sp. nov., from New Caledonia.
abstract: OBJECTIVE
  Exopolysaccharides (EPS) are industrially valuable molecules with numerous useful properties. This study describes the techniques used for the identification of a novel Vibrio bacterium and preliminary characterization of its EPS.
  
  
  RESULTS
  Bioprospection in marine intertidal areas of New Caledonia followed by screening for EPS producing brought to selection of the isolate NC470. Phylogenetic analysis (biochemical tests, gene sequencing and DNA-DNA relatedness) permitted to identify NC470 as a new member of the Vibrio genus. The EPS was produced in batch fermentation, purified using the ultrafiltration process and analysed by colorimetry, Fourier Transform Infrared spectroscopy, gas chromatography, Nuclear Magnetic Resonance and HPLC-size exclusion chromatography. This EPS exhibits a high N-acetyl-hexosamines and uronic acid content with a low amount of neutral sugar. The molecular mass was 672 × 10(3)  Da. These data are relevant for possible technological exploitation.
  
  
  CONCLUSIONS
  We propose the name Vibrio neocaledonicus sp. nov for this isolate NC470, producing an EPS with an unusual sugar composition. Comparison with other known polymers permitted to select applications for this polymer.
  
  
  CONCLUSIONS
  This study contributes to evaluate the marine biodiversity of New Caledonia. It also highlights the biotechnological potential of New Caledonia marine bacteria.
authors.affiliation: IFREMER, Centre de Brest, BRM/BMM, Plouzané, France. echalkiadakis@pasteur.nc
authors.forename: E
authors.initials: E
authors.lastname: Chalkiadakis
authors.forename: R
authors.initials: R
authors.lastname: Dufourcq
authors.forename: S
authors.initials: S
authors.lastname: Schmitt
authors.forename: C
authors.initials: C
authors.lastname: Brandily
authors.forename: N
authors.initials: N
authors.lastname: Kervarec
authors.forename: D
authors.initials: D
authors.lastname: Coatanea
authors.forename: H
authors.initials: H
authors.lastname: Amir
authors.forename: L
authors.initials: L
authors.lastname: Loubersac
authors.forename: S
authors.initials: S
authors.lastname: Chanteau
authors.forename: J
authors.initials: J
authors.lastname: Guezennec
authors.forename: M
authors.initials: M
authors.lastname: Dupont-Rouzeyrol
authors.forename: C
authors.initials: C
authors.lastname: Simon-Colin
mesh_terms: D002241:Carbohydrates / Q000032:analysis; D006595:Hexosamines / Q000032:analysis; D009510:New Caledonia; D010802:Phylogeny; D011135:Polysaccharides, Bacterial / Q000737:chemistry / Q000378:metabolism*; D014574:Uronic Acids / Q000032:analysis; D014733:Vibrio / Q000145:classification / Q000235:genetics / Q000378:metabolism*
chemical_list: D002241:Carbohydrates; D006595:Hexosamines; D011135:Polysaccharides, Bacterial; D014574:Uronic Acids