Direct and Indirect Bactericidal Effects of Cold Atmospheric-Pressure Microplasma and Plasma Jet.

Tytuł:: Direct and Indirect Bactericidal Effects of Cold Atmospheric-Pressure Microplasma and Plasma Jet.
Autorzy:: Yahaya AG; Graduate School of Science and Technology, Shizuoka University, Hamamatsu 832-8561, Japan.
Okuyama T; Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan.
Kristof J; Organization for Innovation and Social Collaboration, Shizuoka University, Hamamatsu 432-8561, Japan.
Blajan MG; Organization for Innovation and Social Collaboration, Shizuoka University, Hamamatsu 432-8561, Japan.
Shimizu K; Graduate School of Science and Technology, Shizuoka University, Hamamatsu 832-8561, Japan.; Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu 432-8561, Japan.; Organization for Innovation and Social Collaboration, Shizuoka University, Hamamatsu 432-8561, Japan.
Źródło:: Molecules (Basel, Switzerland) [Molecules] 2021 Apr 26; Vol. 26 (9). Date of Electronic Publication: 2021 Apr 26.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Original Publication: Basel, Switzerland : MDPI, c1995-
MeSH Terms:: Atmospheric Pressure*
Anti-Bacterial Agents/*chemistry
Anti-Bacterial Agents/*pharmacology
Plasma Gases/*chemistry
Plasma Gases/*pharmacology
Microbial Sensitivity Tests ; Ozone/analysis ; Ozone/chemistry ; Reactive Nitrogen Species/chemistry ; Reactive Oxygen Species/chemistry ; Staphylococcus aureus/drug effects ; Sterilization/methods ; Water/chemistry
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Contributed Indexing:: Keywords: DBD microplasma; UV-Vis spectroscopy; nitrogen species; plasma activated water; plasma jet; reactive oxygen; sterilization
Substance Nomenclature:: 0 (Anti-Bacterial Agents)
0 (Plasma Gases)
0 (Reactive Nitrogen Species)
0 (Reactive Oxygen Species)
059QF0KO0R (Water)
66H7ZZK23N (Ozone)
Entry Date(s):: Date Created: 20210430 Date Completed: 20210520 Latest Revision: 20210520
Update Code:: 20240104
PubMed Central ID:: PMC8123442
DOI:: 10.3390/molecules26092523
PMID:: 33925959
: Czasopismo naukowe

Pełny tekst

The direct and indirect bactericidal effects of dielectric barrier discharge (DBD) cold atmospheric-pressure microplasma in an air and plasma jet generated in an argon-oxygen gas mixture was investigated on Staphylococcus aureus and Cutibacterium acnes . An AC power supply was used to generate plasma at relatively low discharge voltages (0.9-2.4 kV) and frequency (27-30 kHz). Cultured bacteria were cultivated at a serial dilution of 10 -5 , then exposed to direct microplasma treatment and indirect treatment through plasma-activated water (PAW). The obtained results revealed that these methods of bacterial inactivation showed a 2 and 1 log reduction in the number of survived CFU/mL with direct treatment being the most effective means of treatment at just 3 min using air. UV-Vis spectroscopy confirmed that an increase in treatment time at 1.2% O 2 , 98.8% Ar caused a decrease in O 2 concentration in the water as well as a decrease in absorbance of the peaks at 210 nm, which are attributed NO 2 - and NO 3 - concentration in the water, termed denitratification and denitritification in the treated water, respectively.

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