Binding of Colloidal MnO2 by Extracellular Polysaccharides of Pedomicrobium manganicum
| Autor: | Vullapa Arunpairojana, David R. Dixon, L. I. Sly |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1990 |
| Předmět: |
chemistry.chemical_classification
Extracellular polysaccharide Ecology biology Pedomicrobium manganicum Ionic bonding Protonation medicine.disease_cause Polysaccharide biology.organism_classification Physiology and Biotechnology Applied Microbiology and Biotechnology Colloid chemistry Biochemistry Biophysics medicine Extracellular Bacteria Food Science Biotechnology |
| Popis: | The extracellular acidic polysaccharides of the manganese-oxidizing bacterium Pedomicrobium manganicum were able to bind preformed colloidal MnO 2 . The capacity of the cells to bind MnO 2 was pH dependent. Enhanced binding capacity below pH 5 suggests that ionic bonding forces are involved in the binding mechanism and that there is a charge reversal on the acidic polysaccharides between pH 5 and 4 that is due to increased protonation of carboxyl groups. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|