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KMID : 1142720230260040117
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Annals of Clinical Microbiology
2023 Volume.26 No. 4 p.117 ~ p.124
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Evaluation of the efficacy of three medical device detergents on bacteria and yeast derived biofilm: a comparative study
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Park Kuen-Youl
Kim Mi-Na
Sung Heung-Sup
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Abstract
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Background: This study aimed to evaluate the efficacy of three medical detergents againstbacteria and yeast-derived biofilms.
Methods: The biofilm removal efficacy of EmpowerTM (Metrex, USA), CidezymeTM (Johnsonand Johnson Medical Inc, USA), and Matrix mintTM (Whiteley Medical, Australia) werecompared to that of chlorine bleach. Biofilms were produced using Staphylococcus aureusRN9120, Escherichia coli ATCC35218, Pseudomonas aeruginosa ATCC27853, Candida albicansATCC14053, and clinical isolates of Enterococcus faecalis, E. coli, Klebsiella pneumoniae,Candida auris, and Trichosporon asahii. The organisms were suspended in tryptic soy broth(TSB) in 96-well microplates and cultured for 72 hours. They were treated with the detergents,and the residual biofilm mass was quantified using crystal violet staining followed by opticaldensity measurements at 620 nm (OD620).
Results: EmpowerTM and CidezymeTM significantly reduced the biofilm mass derived from allspecies by > 50% of OD620 at 37ºC except those from E. faecalis, T. asahii, and C. auris. MatrixmintTM had no effect on the biofilms under any condition.
Conclusion: The culture conditions and the species of the biofilm-producing organisminfluenced the effectiveness of the detergent. Biofilms produced by E. faecalis, C. auris, and T. asahii were resistant to all detergent treatments under all conditions.
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KEYWORD
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Biofilm, Detergent, Bacteria, Yeast, Efficacy
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