Papers

Peer-reviewed
Jan, 2015

Characterization of exopolymeric substances from selected Rhodopseudomonas palustris strains and their ability to adsorb sodium ions

CARBOHYDRATE POLYMERS
  • Tomorn Nunkaew
  • ,
  • Duangporn Kantachote
  • ,
  • Teruhiko Nitoda
  • ,
  • Hiroshi Kanzaki
  • ,
  • Raymond J. Ritchie

Volume
115
Number
22
First page
334
Last page
341
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1016/j.carbpol.2014.08.099
Publisher
ELSEVIER SCI LTD

Removal of Na+ by binding with exopolymeric substances (EPS) from Rhodopseudomonas palustris TN114 and PP803 was investigated. The moderate negative correlation pairs (r(p)) between remaining Alcian blue and amount of Na+ adsorbed on EPS from strains TN114 and PP803 were -0.652 and -0.609. Both strains showed positive relationships between the amounts of EPS produced and bacterial growth. EPS from strain PP803 had a higher efficiency in removing Na+ than the EPS from strain TN114 based on their EC50 values (1.79 and 1.49 mg/mL for TN114 and PP803, respectively). The principal component from EPS of strain PP803 which was responsible for salt removal was purified and it was identified as a polysaccharide kDa) mainly composed of galacturonic acid. Overall results suggested that EPS is a key factor that our strains used to bind Na* allowing their survival in high NaC1 concentrations. (C) 2014 Elsevier Ltd. All rights reserved.

Link information
DOI
https://doi.org/10.1016/j.carbpol.2014.08.099
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000344869800043&DestApp=WOS_CPL
ID information
  • DOI : 10.1016/j.carbpol.2014.08.099
  • ISSN : 0144-8617
  • eISSN : 1879-1344
  • Web of Science ID : WOS:000344869800043

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