Background/aim: Clinically used disinfectants are often irritating and cause skin problems. Ozone water is unique among disinfectants. It does not damage skin cells and readily decomposes to oxygen without generating harmful residues. On the other hand, it rapidly loses its sanitizing activity. Recently developed nano-bubble ozone water (NBOW) can keep its sanitizing activity much longer. This study aimed to examine the microbicidal effects of NBOW after long-term storage.
Materials And Methods: The concentration of ozone in NBOW was examined by measuring the NBOW redox potential. Microbicidal activity was evaluated by colony formation assays, after incubating bacteria with NBOW for set time periods.
Results: NBOW lost its microbicidal activity after 1 year of storage at 4°C. Stocked frozen, NBOW retained appreciable microbicidal activity after 1 year of storage. Mycobacterium smegmatis, one of the most disinfectant-resistant bacteria, was killed within 15 min. NBOW was resistant to freeze-thawing.
Conclusion: NBOW that had been stored frozen possessed sufficient microbicidal activity to kill bacteria even after 1 year of storage. Moreover, it was shown that NBOW is freeze-thaw resistant. NBOW possesses desirable features rendering it an attractive alternative disinfectant.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5566906 | PMC |
| http://dx.doi.org/10.21873/invivo.11097 | DOI Listing |
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