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Antibacterial properties of nine pure metals: a laboratory study using Staphylococcus aureus and Escherichia coli.
- Source :
-
Biofouling [Biofouling] 2010 Oct; Vol. 26 (7), pp. 851-8. - Publication Year :
- 2010
-
Abstract
- Bacterial attachment and growth on material surfaces are considered to be the primary steps leading to the formation of biofilm. Biofilms in hospital and food processing settings can result in bacterial infection and food contamination, respectively. Prevention of bacterial attachment, therefore, is considered to be the best strategy for abating these menaces and therefore the development of antibacterial metals becomes important. In this study, nine pure metals, viz. titanium, cobalt, nickel, copper, zinc, zirconium, molybdenum, tin, and lead have been tested for their antibacterial properties against two bacterial strains, Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli. This was accomplished using two assay methods, the film contact method and the shaking flask method. The results show that the antibacterial properties varied significantly with different metals and the effectiveness of metals to resist bacterial attachment varied with the bacterial strain. Among the metals tested, titanium and tin did not exhibit antibacterial properties. TEM images showed that metal accumulation resulted in the disruption of the bacterial cell wall and other cellular components.
- Subjects :
- Bacterial Adhesion drug effects
Biofilms drug effects
Biofilms growth & development
Cell Wall drug effects
Culture Media
Escherichia coli growth & development
Escherichia coli ultrastructure
Microbial Sensitivity Tests methods
Microscopy, Electron, Transmission
Staphylococcus aureus growth & development
Staphylococcus aureus ultrastructure
Anti-Bacterial Agents pharmacology
Escherichia coli drug effects
Metals, Heavy pharmacology
Staphylococcus aureus drug effects
Subjects
Details
- Language :
- English
- ISSN :
- 1029-2454
- Volume :
- 26
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- Biofouling
- Publication Type :
- Academic Journal
- Accession number :
- 20938849
- Full Text :
- https://doi.org/10.1080/08927014.2010.527000