Disinfection of meticillin-resistant Staphylococcus aureus and Staphylococcus epidermidis biofilms using a remote non-thermal gas plasma

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Title: Disinfection of meticillin-resistant Staphylococcus aureus and Staphylococcus epidermidis biofilms using a remote non-thermal gas plasma
Authors: Cotter, John J.
Maguire, Paul
Soberon, Felipe
Daniels, Stephen
O'Gara, James P.
Casey, Eoin
Permanent link: http://hdl.handle.net/10197/2972
Date: May-2011
Abstract: The effective disinfection of hospital surfaces is recognised as an important factor in preventing hospital-acquired infections. The purpose of this study was to quantify the disinfection rate of a novel gas plasma system on clinically relevant biofilms. Clinical isolates of Staphylococcus epidermidis and methicillin-resistant Staphylococcus aureus (MRSA) were grown as biofilms on glass surfaces and tested in a disinfection container remote from the plasma source. The strains used in this study were known to produce substantial quantities of biofilm and average log10 counts were 9.0 and 9.1 cfu/cm2 for S. epidermidis and MRSA respectively. Counts were reduced by between 4 and 4.5 log10 after 1 h of exposure for MRSA and S. epidermidis respectively. More prolonged treatment in the case of MRSA biofilms resulted in a 5.5 log10 reduction after 90 min. Biofilm samples were also placed in medical device packaging bags and similar rates of disinfection were observed.
Funding Details: Other funder
Type of material: Journal Article
Publisher: Elsevier
Copyright (published version): 2011 The Healthcare Infection Society. Published by Elsevier Ltd.
Keywords: Biofilm;Gas plasma;Meticillin;Methicillin;Staphylococcus epidermidis;Staphylococcus aureus;Disinfection;MRSA;HCAI;Antimicrobial
Subject LCSH: Biofilms
Disinfection and disinfectants
Plasma (Ionized gases)
Staphylococcus
Nosocomial infections
DOI: 10.1016/j.jhin.2011.03.019
Language: en
Status of Item: Peer reviewed
Appears in Collections:Conway Institute Research Collection
Chemical and Bioprocess Engineering Research Collection
Biomolecular and Biomedical Science Research Collection

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