Bactericidal activities of woven cotton and nonwoven polypropylene fabrics coated with hydroxyapatite-binding silver/titanium dioxide ceramic nanocomposite "Earth-plus".
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| Abstract | BACKGROUND: Bacteria from the hospital environment, including linens and curtains, are often responsible for hospital-associated infections. The aim of the present study was to evaluate the bactericidal effects of fabrics coated with the hydroxyapatite-binding silver/titanium dioxide ceramic nanocomposite "Earth-plus". METHODS: Bactericidal activities of woven and nonwoven fabrics coated with Earth-plus were investigated by the time-kill curve method using nine bacterial strains, including three Staphylococcus aureus, three Escherichia coli, and three Pseudomonas aeruginosa strains. RESULTS: The numbers of viable S. aureus and E. coli cells on both fabrics coated with Earth-plus decreased to below 2 log(10) colony-forming units/mL in six hours and reached the detection limit in 18 hours. Viable cell counts of P. aeruginosa on both fabrics coated with Earth-plus could not be detected after 3-6 hours. Viable cells on woven fabrics showed a more rapid decline than those on nonwoven fabrics. Bacterial cell counts of the nine strains on fabrics without Earth-plus failed to decrease even after 18 hours. CONCLUSION: Woven cotton and nonwoven polypropylene fabrics were shown to have excellent antibacterial potential. The woven fabric was more bactericidal than the nonwoven fabric.
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| Authors | Eriko Kasuga, Yoshiyuki Kawakami, Takehisa Matsumoto, Eiko Hidaka, Kozue Oana, Naoko Ogiwara, Dai Yamaki, Tsukasa Sakurada, Takayuki Honda |
| Journal | International journal of nanomedicine (Int J Nanomedicine) Vol. 6 Pg. 1937-43 ( 2011) ISSN: 1178-2013 [Electronic] New Zealand |
| PMID | 21931489 (Publication Type: Evaluation Study, Journal Article) |
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