%0 Journal Article %1 Rivas.2011 %A Rivas, Bernabe L. %A Maureira, Antonio %A Guzman, Catherine %A Contreras, David %A Kaim, Wolfgang %A Geckeler, Kurt E. %D 2011 %J Polymer Bulletin (Heidelberg, Germany) %K Escherichia L Staphylococcus copper lysine metal poly toxic ultrafiltration %N 5 %P 763--774 %R 10.1007/s00289-010-0418-3 %T Poly(L-lysine) as a polychelatogen to remove toxic metals using ultrafiltration and bactericide properties of poly(L-lysine)-Cu2+ complexes %V 67 %X Poly(L-lysine) is a water-sol., synthetic polypeptide contg. functional amine groups that help remove di- and trivalent metal ions from aq. solns. This polymer's removal properties were studied under different exptl. conditions: (1) competitive and non-competitive conditions; (2) different pHs; and (3) filtration factors. Under the conditions of the Liq.-Phase Polymer-Based Retention (LPR) technique, the cooper (II) ion interaction was found to be selective and efficient when compared to other divalent metal ions studied. However, interestingly, this selectivity disappeared when trivalent metal ions were present. The polymer-metal ion interactions are based on the amino groups of the side-chains as well as the polypeptide backbone chain. The removal of metal ions was strongly dependent on the pH. By structural characterization with FT-IR and EPR spectroscopy, participation of the amide and mainly amine groups was found to take place for the coordination. For the Cu2+, coordination through four amine nitrogen donor atoms in the primary coordination sphere was detected. Antibacterial activity tests were conducted with the poly(L-lysine)-Cu2+ complex and showed a higher activity in comparison with the precursors Cu2+ and poly(L-lysine) at the same concns. for E. coli (6538P), a Gram-neg. bacterium, and S. aureus (ATCC), a Gram-pos. bacterium. on SciFinder(R)

@article{Rivas.2011, abstract = {Poly(L-lysine) is a water-sol., synthetic polypeptide contg. functional amine groups that help remove di- and trivalent metal ions from aq. solns. This polymer's removal properties were studied under different exptl. conditions: (1) competitive and non-competitive conditions; (2) different pHs; and (3) filtration factors. Under the conditions of the Liq.-Phase Polymer-Based Retention (LPR) technique, the cooper (II) ion interaction was found to be selective and efficient when compared to other divalent metal ions studied. However, interestingly, this selectivity disappeared when trivalent metal ions were present. The polymer-metal ion interactions are based on the amino groups of the side-chains as well as the polypeptide backbone chain. The removal of metal ions was strongly dependent on the pH. By structural characterization with FT-IR and EPR spectroscopy, participation of the amide and mainly amine groups was found to take place for the coordination. For the Cu2+, coordination through four amine nitrogen donor atoms in the primary coordination sphere was detected. Antibacterial activity tests were conducted with the poly(L-lysine)-Cu2+ complex and showed a higher activity in comparison with the precursors Cu2+ and poly(L-lysine) at the same concns. for E. coli (6538P), a Gram-neg. bacterium, and S. aureus (ATCC), a Gram-pos. bacterium. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Rivas, Bernabe L. and Maureira, Antonio and Guzman, Catherine and Contreras, David and Kaim, Wolfgang and Geckeler, Kurt E.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/253517af46a882a7d6b6b236312d6cbf2/huebleriac}, doi = {10.1007/s00289-010-0418-3}, interhash = {269c1a2482a13dfa214382bbcd489f96}, intrahash = {53517af46a882a7d6b6b236312d6cbf2}, issn = {0170-0839}, journal = {Polymer Bulletin (Heidelberg, Germany)}, keywords = {Escherichia L Staphylococcus copper lysine metal poly toxic ultrafiltration}, number = 5, pages = {763--774}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Poly(L-lysine) as a polychelatogen to remove toxic metals using ultrafiltration and bactericide properties of poly(L-lysine)-Cu2+ complexes}, volume = 67, year = 2011 }