Antimicrobial Effects of Nano-Silver Gauze against Common Bacterial Isolates.
- Author:
Sun Min LEE
;
Eun Kyoung YANG
;
Eun Yup LEE
;
Yeong Dae KIM
;
Chulun L CHANG
- Publication Type:Original Article
- Keywords:
Acinetobacter baumonnii;
Escherichia coli;
Nanocrystalline silver
- MeSH:
Acinetobacter baumannii;
Agar;
Bacteria;
Disinfection;
Escherichia coli;
Silver;
Sterilization;
Suspensions
- From:Korean Journal of Nosocomial Infection Control
2006;11(2):87-91
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Silver has been used for disinfection and sterilization. We aimed to confirm the in-vitro antibacterial effects of nanocrystalline silver-coated gauze. METHODS: Fourteen clinical isolates each of Escherichia coli and Acinetobacter baumannii were used. Bacterial suspensions made in tryptic soy broth were exposed to Ordinary and silver-coated gauze. Bacteria were then harvested from the gauze immediately and after 24 h incubation, cultured on blood agar plates and eunmerated for viable counts. The number of colonies was converted into common logarithms for comparison. RESULTS: The number of colonies recovered from silver-coated gauze was significantly lower than those recovered from ordinary gauze when harvested immediately after exposure (E. coli, 3.06 vs 1.73; A. baumannii, 3.13 vs 1.98; P<0.001). After 24 h incubation of exposed gauze, silver-coated gauze produced less than 1 CFU/mL, whereas ordinary gauze produced a number of colonies significantly higher than it did immediately after exposure (E. coli, 4.13; A. baumannii, 4.46; P<0.001). Conclusion: Compared with ordinary gauze, silver-coated gauze was shown to have 99.99% antibacterial effect.
