1. Bactericidal Activity of Ready-To-Use Alcohol-Based Commercial Wipes According to EN 16615 Carrier Standard
- Author
-
Agnieszka Chojecka, Olga Paduch, Krzysztof Kanecki, Aneta Nitsch-Osuch, Patryk Tarka, and Anna Kierzkowska
- Subjects
Staphylococcus aureus ,Time Factors ,Contact time ,Health, Toxicology and Mutagenesis ,Disinfectant ,lcsh:Medicine ,EN 16615 ,Alcohol ,bactericidal activity ,1-Propanol ,030501 epidemiology ,Article ,contact time ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Enterococcus hirae ,Humans ,030212 general & internal medicine ,disinfection ,Bacteriological Techniques ,Chromatography ,biology ,Dose-Response Relationship, Drug ,Chemistry ,lcsh:R ,Public Health, Environmental and Occupational Health ,technology, industry, and agriculture ,biology.organism_classification ,Bacterial Load ,Anti-Bacterial Agents ,Pseudomonas aeruginosa ,Ready to use ,0305 other medical science ,ready-to-use alcohol-based wipes ,Disinfectants - Abstract
Background: The effectiveness of ready-to-use disinfectant wipes was previously assessed in standardized suspension tests, which were inadequate because they ignored that the wipes are rubbed against a surface. Thus, we assessed the effectiveness of commercially available disinfectant wipes impregnated with an alcoholic solution according to the 16615 standard, which includes a test with mechanical action. Methods: According to the EN 16615 standard, under clean conditions, four squares (5 cm × 5 cm), placed next to one another, were marked on a test surface. Enterococcus hirae, Pseudomonas aeruginosa, and Staphylococcus aureus were inoculated on the leftmost square, and a wipe impregnated with an alcoholic solution was placed to the left of that square. Then, the wipe was pressed with a 2.5 kg weight and moved to the right and back to the left. After contact times of 1, 5, 10, or 15 min, we measured the reduction in bacterial load. Results: Alcohol-based ready-to-use commercial wipes did not show sufficient bactericidal activity at the contact times of 1, 5, 10 and 15 min. Wipes containing propan-1-ol and a mixture of propan-1-ol and propan-2-ol were active against Pseudomonas aeruginosa at the contact times of 1 min and 15 min. None of the examined wipes were active against Enterococcus hirae or Staphylococcus aureus. Conclusion: Bactericidal parameters of ready-to-use disinfectant wipes should be determined in surface tests, in addition to suspension tests, because suspension tests do not simulate the conditions under which disinfectant wipes are used in practice.
- Published
- 2019
- Full Text
- View/download PDF