Cellulose Acetate Containing Toluidine Blue and Rose Bengal Is an Effective Antimicrobial Coating when Exposed to White Light

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Abstract
Simple methods of reducing the microbial load on surfaces in hospitals are needed to reduce the risk of hospital-associated infections. Here we report on the ability of a cellulose acetate coating containing the photosensitizers toluidine blue and rose bengal to kill microbes ( Staphylococcus aureus , Escherichia coli , Clostridium difficile , a bacteriophage, and Candida albicans ) on its surface when illuminated with white light.