Antimicrobial properties of selected copper alloys on \emph{Staphylococcus aureus} and \emph{Escherichia coli} in different simulations of environmental conditions: with vs. without organic contamination
PBN-AR
Instytucja
Wydział Metali Nieżelaznych (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
International Journal of Environmental Research and Public Health (30pkt w roku publikacji)
ISSN
1661-7827
EISSN
1660-4601
Wydawca
DOI
Rok publikacji
2017
Numer zeszytu
7
Strony od-do
1--15, art. no. 813
Numer tomu
14
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
1.07
Autorzy
Pozostali autorzy
+ 5
Słowa kluczowe
EN
Escherichia coli
Staphylococcus aureus
antimicrobial copper
hospital environment
environmental disinfection
patient safety
Open access
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Creative Commons — Uznanie autorstwa
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Razem z publikacją
Streszczenia
Język
EN
Treść
Background: Hospital equipment made from copper alloys can play an important role in complementing traditional methods of disinfection. Aims of the study: The aim of this study was to assess the dynamics of the antimicrobial properties of selected copper alloys in different simulations of environmental conditions (with organic contamination vs. without organic contamination), and to test alternatives to the currently used testing methods. Materials and Methods: A modification of Japanese standard JIS Z 2801 as well as Staphylococcus aureus (SA) and Escherichia coli (EC) suspended in NaCl vs. tryptic soy broth (TSB) were used in tests performed on seven commonly used copper alloys, copper, and stainless steel. Results: A much faster reduction of the bacterial suspension was observed for the inoculum prepared in NaCl than in TSB. A faster reduction for EC than for SA was observed in the inoculum prepared in NaCl. The opposite results were found for the inoculum based on TSB. A significant correlation between the copper concentration in the copper alloys and the time and degree of bacterial suspension reduction was only observed in the case of EC. Conclusions: This study confirmed the antimicrobial properties of copper alloys, and additionally showed that Staphylococcus aureus was more resistant than Escherichia coli in the variant of the experiment without organic contamination. However, even for SA, a total reduction of the bacterial inoculum’s density took no longer than 2 h. Under conditions simulating organic contamination, all of the tested alloys were shown to have bactericidal or bacteriostatic properties, which was contrary to the results from stainless steel.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:107597
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