Investigations into the uptake of copper, iron and selenium by a highly sulphated bacterial exopolysaccharide isolated from microbial mats
| Autor: | Anthony Courtois, Jean Guezennec, Christelle Simon-Colin, Gérard Raguénès, Bernard Costa, Tinaïg Le Costaouec, Philippe Crassous, Xavier Moppert |
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| Rok vydání: | 2009 |
| Předmět: |
Binding capacity
Iron Chemical structure Microbial metabolism chemistry.chemical_element Bioengineering 010501 environmental sciences Polysaccharide 01 natural sciences Applied Microbiology and Biotechnology Absorption Ferrous Selenium 03 medical and health sciences Microbial mats medicine 030304 developmental biology 0105 earth and related environmental sciences chemistry.chemical_classification 0303 health sciences biology Sulfates Chemistry Polysaccharides Bacterial Paracoccus biology.organism_classification Copper Biochemistry Sulphated exopolysaccharide Ferric Bacteria Biotechnology medicine.drug Nuclear chemistry |
| Zdroj: | Journal of Industrial Microbiology and Biotechnology (1367-5435) (Springer), 2009-04, Vol. 36, N. 4, P. 599-604 |
| ISSN: | 1476-5535 1367-5435 |
| Popis: | A bacterium isolated from microbial mats located on a polynesian atoll produced a high molecular weight (3,000 kDa) and highly sulphated exopolysaccharide. Previous studies showed that the chemical structure of this EPS consisted of neutral sugars, uronic acids, and high proportions of acetate and sulphate groups. The copper- and iron-binding ability of the purified pre-treated native EPS was investigated. Results showed that this EPS had a very high affinity for both copper (9.84 mmol g(-1) EPS) and ferrous iron (6.9 mmol g(-1) EPS). Amazingly, this EPS did not show any affinity for either ferric ions or selenium salts. This finding is one of the first steps in assessing the biotechnological potential of this polysaccharide. |
| Databáze: | OpenAIRE |
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