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Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization
The aim of this study was the assessment of the effect of time exposure, temperature, distance, and organic contaminants on radiant catalytic ionization (RCI) microbicidal effectiveness. The number of all examined bacteria decreased together with time exposure of RCI. The lowest recovery was obtaine...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6989485/ https://www.ncbi.nlm.nih.gov/pubmed/32038531 http://dx.doi.org/10.3389/fmicb.2019.03057 |
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author | Skowron, Krzysztof Wałecka-Zacharska, Ewa Grudlewska, Katarzyna Kwiecińska-Piróg, Joanna Wiktorczyk, Natalia Kowalska, Maria Paluszak, Zbigniew Kosek-Paszkowska, Katarzyna Brożek, Klaudia Korkus, Jakub Gospodarek-Komkowska, Eugenia |
author_facet | Skowron, Krzysztof Wałecka-Zacharska, Ewa Grudlewska, Katarzyna Kwiecińska-Piróg, Joanna Wiktorczyk, Natalia Kowalska, Maria Paluszak, Zbigniew Kosek-Paszkowska, Katarzyna Brożek, Klaudia Korkus, Jakub Gospodarek-Komkowska, Eugenia |
author_sort | Skowron, Krzysztof |
collection | PubMed |
description | The aim of this study was the assessment of the effect of time exposure, temperature, distance, and organic contaminants on radiant catalytic ionization (RCI) microbicidal effectiveness. The number of all examined bacteria decreased together with time exposure of RCI. The lowest recovery was obtained, both from the rubber surface (6.36 log CFU × cm(–2)) and steel (6.04 log CFU × cm(–2)) in the case of Escherichia coli O157:H7. On the other hand, Staphylococcus aureus was isolated in the largest number (rubber: 7.88 log CFU × cm(–2), steel: 7.79 log CFU × cm(–2)). Among the tested environmental conditions, the greatest bacterial population was re-isolated at 4°C (distance: 0.5 m, time: 24 h), whereas the lowest population was found at a distance of 0.5 m (temperature: 20°C, time: 24 h) and on surfaces without contamination. In the samples treated with RCI, the bacterial population was the lowest on non-contaminated surfaces, ranging from 3.76 log CFU × cm(–2) (E. coli O157:H7) to 5.58 log CFU × cm(–2) (S. aureus) for the rubber, and from 3.26 log CFU × cm(–2) (E. coli O157:H7) to 5.20 log CFU × cm(–2) (S. aureus) for the stainless steel. The highest bacteria number was isolated from surfaces contaminated with meat and fish pulp. The lowest bacterial reduction caused by RCI was found in the case of rubber contaminated with meat-fish pulp (24 h, 0.5 m, 20°C). The reduction rate was equal to 0.89 log CFU × cm(–2) for S. aureus, 1.17 log CFU × cm(–2) for Listeria monocytogenes, 1.43 log CFU × cm(–2) for Salmonella Enteritidis and 1.61 log CFU × cm(–2) for E. coli O157:H7. In turn, the greatest bacterial reduction was found in the case of non-contaminated steel (24 h, 0.5 m, 37°C). The reduction rate was equal to 4.52 log CFU × cm(–2) for L. monocytogenes, 3.61 log CFU × cm(–2) for S. Enteritidis, 2.98 log CFU × cm(–2) for E. coli O157:H7 and 2.77 log CFU × cm(–2) for S. aureus. RCI allows the inactivation of pathogens from stainless steel and rubber surfaces. Its efficacy is species-dependent and affected by environmental factors. |
format | Online Article Text |
id | pubmed-6989485 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-69894852020-02-07 Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization Skowron, Krzysztof Wałecka-Zacharska, Ewa Grudlewska, Katarzyna Kwiecińska-Piróg, Joanna Wiktorczyk, Natalia Kowalska, Maria Paluszak, Zbigniew Kosek-Paszkowska, Katarzyna Brożek, Klaudia Korkus, Jakub Gospodarek-Komkowska, Eugenia Front Microbiol Microbiology The aim of this study was the assessment of the effect of time exposure, temperature, distance, and organic contaminants on radiant catalytic ionization (RCI) microbicidal effectiveness. The number of all examined bacteria decreased together with time exposure of RCI. The lowest recovery was obtained, both from the rubber surface (6.36 log CFU × cm(–2)) and steel (6.04 log CFU × cm(–2)) in the case of Escherichia coli O157:H7. On the other hand, Staphylococcus aureus was isolated in the largest number (rubber: 7.88 log CFU × cm(–2), steel: 7.79 log CFU × cm(–2)). Among the tested environmental conditions, the greatest bacterial population was re-isolated at 4°C (distance: 0.5 m, time: 24 h), whereas the lowest population was found at a distance of 0.5 m (temperature: 20°C, time: 24 h) and on surfaces without contamination. In the samples treated with RCI, the bacterial population was the lowest on non-contaminated surfaces, ranging from 3.76 log CFU × cm(–2) (E. coli O157:H7) to 5.58 log CFU × cm(–2) (S. aureus) for the rubber, and from 3.26 log CFU × cm(–2) (E. coli O157:H7) to 5.20 log CFU × cm(–2) (S. aureus) for the stainless steel. The highest bacteria number was isolated from surfaces contaminated with meat and fish pulp. The lowest bacterial reduction caused by RCI was found in the case of rubber contaminated with meat-fish pulp (24 h, 0.5 m, 20°C). The reduction rate was equal to 0.89 log CFU × cm(–2) for S. aureus, 1.17 log CFU × cm(–2) for Listeria monocytogenes, 1.43 log CFU × cm(–2) for Salmonella Enteritidis and 1.61 log CFU × cm(–2) for E. coli O157:H7. In turn, the greatest bacterial reduction was found in the case of non-contaminated steel (24 h, 0.5 m, 37°C). The reduction rate was equal to 4.52 log CFU × cm(–2) for L. monocytogenes, 3.61 log CFU × cm(–2) for S. Enteritidis, 2.98 log CFU × cm(–2) for E. coli O157:H7 and 2.77 log CFU × cm(–2) for S. aureus. RCI allows the inactivation of pathogens from stainless steel and rubber surfaces. Its efficacy is species-dependent and affected by environmental factors. Frontiers Media S.A. 2020-01-23 /pmc/articles/PMC6989485/ /pubmed/32038531 http://dx.doi.org/10.3389/fmicb.2019.03057 Text en Copyright © 2020 Skowron, Wałecka-Zacharska, Grudlewska, Kwiecińska-Piróg, Wiktorczyk, Kowalska, Paluszak, Kosek-Paszkowska, Brożek, Korkus and Gospodarek-Komkowska. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Skowron, Krzysztof Wałecka-Zacharska, Ewa Grudlewska, Katarzyna Kwiecińska-Piróg, Joanna Wiktorczyk, Natalia Kowalska, Maria Paluszak, Zbigniew Kosek-Paszkowska, Katarzyna Brożek, Klaudia Korkus, Jakub Gospodarek-Komkowska, Eugenia Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title | Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title_full | Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title_fullStr | Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title_full_unstemmed | Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title_short | Effect of Selected Environmental Factors on the Microbicidal Effectiveness of Radiant Catalytic Ionization |
title_sort | effect of selected environmental factors on the microbicidal effectiveness of radiant catalytic ionization |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6989485/ https://www.ncbi.nlm.nih.gov/pubmed/32038531 http://dx.doi.org/10.3389/fmicb.2019.03057 |
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