Binding of Colloidal MnO2 by Extracellular Polysaccharides of Pedomicrobium manganicum
AUTOR(ES)
Sly, L. I.
RESUMO
The extracellular acidic polysaccharides of the manganese-oxidizing bacterium Pedomicrobium manganicum were able to bind preformed colloidal MnO2. The capacity of the cells to bind MnO2 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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=184844Documentos Relacionados
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