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Uptake of metals by bacterial polysaccharides
Author(s) -
Geddie Joanne L.,
Sutherland I.W.
Publication year - 1993
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1993.tb05155.x
Subject(s) - selectivity , chemistry , polysaccharide , polymer , metal , inorganic chemistry , metal ions in aqueous solution , nuclear chemistry , organic chemistry , catalysis
J.L. GEDDIE AND I.W. SUTHERLAND. 1993. The binding of cations by a range of bacterial polysaccharides was examined. Comparison of native and deacetylated polymers indicated the influence of polysaccharide acetylation on ion uptake and selectivity. The effects of temperature and pH on ion uptake were also examined. Metal ion uptake was carried out by dialysis and samples were analysed using ion chromatography. The native acetylated polymers showed a selectivity for Ca 2+ > Mg 2+ > monovalent cations, whereas samples lacking acetyl groups showed a selectivity for monovalent cations > Mg 2+ > Ca 2+ . Increased temperatures reduced the capacity for several of the polymers to bind the cations; The Zoogloea ramigera polymer appeared least affected. The pH value also affected uptake.