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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Shirly Lara Perez1,2, Kate Cristina Blanco2, and Vanderlei Salvador Bagnato2,3
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DOI:10.17265/2159-5348/2021.02.003
Affiliation(s)
1. PPG Biotec, Federal University of São Carlos, 13565-905 São Carlos, Brazil
2. São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, Brazil
3. Department of Biomedical Engineering, Texas A&M University – College Station Texas, 77843, USA
ABSTRACT
Background: Microorganisms transferred by water, air, and human such as bacteria and viruses can reach inanimate surfaces with high rates of contamination. In general, the objectives of the research were to evaluate the decontamination of large areas such as floors, using a mobile device with ultraviolet C light at different delivery times and also to evaluate these microbial loads in stationary or latent phases. Material and methods: The microbial inactivation effects of this device were measured through the recovery of viable bacteria in different points of the applied area. Results: A significant microbial reduction (p ≤ 0.05) of 60-87% was obtained in general for all groups and for groups with stationary phase reductions of 100%. Conclusions: microbial inactivation with UV-C ultraviolet light administration rates presents the possibility of potential use on surfaces of large areas for the decontamination of microorganisms in latent and stationary phases.
KEYWORDS
Ultraviolet light, UV-C, decontamination, surface, latent, lag-phase, bacteria.
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