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Abstract
The effect of three stabilized peracetic acid (PAA) preparations (Bioxal M), with or without surfactants, on an Escherichia coli biofilm model was studied. The biofilm was prepared in glass tubes, and was evaluated indirectly using spectrophotometry. The ability of the products to fix or remove the biofilm was determined by their detergent activity (DA). None of the preparations tested fixed the biofilm. The effect of Bioxal M-1 on the biofilm was equivalent to the control (sterile water). Bioxal M-2 and Bioxal M-3 displayed slightly positive DAs. Non-ionic surfactant improved the DA of the products. Regardless of disinfectant activity, PAA agents display different DAs depending on their formulation. This criterion could be used to select the weakest biofilm-fixing agents. Users should therefore be concerned about the efficiency of the cleaning stage of medical devices. When choosing PAA products, non-fixing ability should be considered in addition to antimicrobial activity.
Published Version
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