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Assessment of early onset surface damage from accelerated disinfection protocol

Authors :
Hyungyung Jo
Alyssa M. West
Peter J. Teska
Haley F. Oliver
John A. Howarter
Source :
Antimicrobial Resistance and Infection Control, Vol 8, Iss 1, Pp 1-10 (2019)
Publication Year :
2019
Publisher :
BMC, 2019.

Abstract

Abstract Background The objective of this study was to evaluate the extent and potential mechanisms of early onset surface damage from simulated wiping typical of six-months of routine disinfection and to assess the subsequent microbial risk of surfaces damaged by disinfectants. Methods Eight common material surfaces were exposed to three disinfectants and a neutral cleaner (neutral cleaner, quaternary ammonium, hydrogen peroxide, sodium hypochlorite) in accelerated aging tests to simulate a long-term disinfection routine. Materials were also immersed in dilute and concentrated chemical solutions to induce surface damage. Surfaces were chemically and physically characterized to determine extent of surface damage. Bactericidal efficacy testing was performed on the Quat-based disinfectant using a modified version of EPA standard operating procedure MB-25-02. Results The wiping protocol increased surface roughness for some material surfaces due to mechanical abrasion of the wiping cloth. The increased roughness did not correlate with changes in bactericidal efficacy. Chemical damage was observed for some surface-disinfectant combinations. The greatest observed effects from disinfectant exposure was in changes in wettability or water contact angle. Conclusions Early onset surface damage was observed in chemical and physical characterization methods. These high-throughput material measurement methods were effective at assessing nanoscale disinfectant-surface compatibility which may go undetected though routine macroscale testing.

Details

Language :
English
ISSN :
20472994
Volume :
8
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Antimicrobial Resistance and Infection Control
Publication Type :
Academic Journal
Accession number :
edsdoj.9abde6e8d4345e2b42cff97c8a8d47b
Document Type :
article
Full Text :
https://doi.org/10.1186/s13756-019-0467-9