Spatial disinfection potential of slightly acidic electrolyzed water.

Slightly acidic electrolyzed water (SAEW) was developed by Japanese companies over 20 years ago. SAEW has the advantage of potent sterilizing action while being relatively safe. This study evaluated the potential application of SAEW in spatial disinfection. Prior to experiments involving spatial spr...

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Main Authors: Midori Kurahashi, Takaaki Ito, Angelica Naka
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2021-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0253595
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author Midori Kurahashi
Takaaki Ito
Angelica Naka
author_facet Midori Kurahashi
Takaaki Ito
Angelica Naka
author_sort Midori Kurahashi
collection DOAJ
description Slightly acidic electrolyzed water (SAEW) was developed by Japanese companies over 20 years ago. SAEW has the advantage of potent sterilizing action while being relatively safe. This study evaluated the potential application of SAEW in spatial disinfection. Prior to experiments involving spatial spraying, the ability of SAEW to remove seven type of microorganisms that cause food poisoning was studied in vitro. Results indicated that free chlorine in SAEW, even at a low concentration (30 mg/L), was able to remove Cladosporium cladosporioides, a typical airborne fungus that degrades food, and spores such as Bacillus subtilis, a hardy bacterium. In an experiment involving spatial spraying, 3.43 log10 CFU/100 L of Staphylococcus epidermidis was sprayed in a room-sized space; the same space was then sprayed with SAEW. The number of settling microbes was measured and the sterilizing ability of SAEW was assessed. Results indicated that the concentration of S. epidermidis in the space was completely removed after 20 minutes of SAEW spraying. The above findings indicate that SAEW may be used to remove airborne microorganisms via spatial spraying.
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spelling doaj.art-19fc7104f664462c904ec632c8c9b96e2022-12-21T23:10:53ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01167e025359510.1371/journal.pone.0253595Spatial disinfection potential of slightly acidic electrolyzed water.Midori KurahashiTakaaki ItoAngelica NakaSlightly acidic electrolyzed water (SAEW) was developed by Japanese companies over 20 years ago. SAEW has the advantage of potent sterilizing action while being relatively safe. This study evaluated the potential application of SAEW in spatial disinfection. Prior to experiments involving spatial spraying, the ability of SAEW to remove seven type of microorganisms that cause food poisoning was studied in vitro. Results indicated that free chlorine in SAEW, even at a low concentration (30 mg/L), was able to remove Cladosporium cladosporioides, a typical airborne fungus that degrades food, and spores such as Bacillus subtilis, a hardy bacterium. In an experiment involving spatial spraying, 3.43 log10 CFU/100 L of Staphylococcus epidermidis was sprayed in a room-sized space; the same space was then sprayed with SAEW. The number of settling microbes was measured and the sterilizing ability of SAEW was assessed. Results indicated that the concentration of S. epidermidis in the space was completely removed after 20 minutes of SAEW spraying. The above findings indicate that SAEW may be used to remove airborne microorganisms via spatial spraying.https://doi.org/10.1371/journal.pone.0253595
spellingShingle Midori Kurahashi
Takaaki Ito
Angelica Naka
Spatial disinfection potential of slightly acidic electrolyzed water.
PLoS ONE
title Spatial disinfection potential of slightly acidic electrolyzed water.
title_full Spatial disinfection potential of slightly acidic electrolyzed water.
title_fullStr Spatial disinfection potential of slightly acidic electrolyzed water.
title_full_unstemmed Spatial disinfection potential of slightly acidic electrolyzed water.
title_short Spatial disinfection potential of slightly acidic electrolyzed water.
title_sort spatial disinfection potential of slightly acidic electrolyzed water
url https://doi.org/10.1371/journal.pone.0253595
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AT angelicanaka spatialdisinfectionpotentialofslightlyacidicelectrolyzedwater