Activity of antibacterial compounds immobilised on montmorillonite |
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Authors: | Kate ina Malachov , Petr Praus, Zuzana Pavlí
kov ,Martina Turicov |
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Affiliation: | aDepartment of Biology and Ecology, University of Ostrava, Chittussiho 10, 700 10 Ostrava, Czech Republic;bDepartment of Analytical Chemistry and Material Testing, VŠB-Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic |
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Abstract: | The activities of antibacterial compounds, such as cetylpyridinium (CP), cetyltrimethylammonium (CTA), silver ions and metallic silver, immobilised on montmorillonite (MMT), were tested in Escherichia coli and Enterococcus faecium bacteria. The results of bacterial growth tests were confirmed by determination of the minimum inhibition concentrations (MICs). Unlike CP and CTA, the intercalated silver ions were easily released from MMT by ion-exchange with Na+ and acted as very effective antibacterial substances in the long term. Their bactericidal and bacteriostatic effects were determined. Generally, antibacterial compounds are effective when they are released from an inorganic carrier. Metallic silver was prepared by reduction of intercalated Ag+ with sodium borohydride. Antibacterial effects of metallic silver were not observed. |
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Keywords: | Antibacterial activity Montmorillonite Cationic surfactants Silver Bacteria |
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