Jan, 2015
Characterization of exopolymeric substances from selected Rhodopseudomonas palustris strains and their ability to adsorb sodium ions
CARBOHYDRATE POLYMERS
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- 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
- ID information
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- DOI : 10.1016/j.carbpol.2014.08.099
- ISSN : 0144-8617
- eISSN : 1879-1344
- Web of Science ID : WOS:000344869800043