title: Microbial Inactivation in the Liquid Phase Induced by Multigas Plasma Jet.
abstract: Various gas atmospheric nonthermal plasmas were generated using a multigas plasma jet to treat microbial suspensions. Results indicated that carbon dioxide and nitrogen plasma had high sterilization effects. Carbon dioxide plasma, which generated the greatest amount of singlet oxygen than other gas plasmas, killed general bacteria and some fungi. On the other hand, nitrogen plasma, which generated the largest amount of OH radical, killed ≥ 6 log of 11 species of microorganisms, including general bacteria, fungi, acid-fast bacteria, spores, and viruses in 1-15 min. To identify reactive species responsible for bacterial inactivation, antioxidants were added to bacterial suspensions, which revealed that singlet oxygen and OH radicals had greatest inactivation effects.
authors.affiliation: Department of Gastroenterology, Kobe University, Kobe, Japan; Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Takamatsu
authors.affiliation: Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Kodai
authors.initials: K
authors.lastname: Uehara
authors.affiliation: Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Yota
authors.initials: Y
authors.lastname: Sasaki
authors.affiliation: Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Miyahara
authors.initials: M
authors.lastname: Hidekazu
authors.affiliation: Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Yuriko
authors.initials: Y
authors.lastname: Matsumura
authors.affiliation: Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Atsuo
authors.initials: A
authors.lastname: Iwasawa
authors.affiliation: Veterinary Medical center, Tottori University, Tottori, Japan.
authors.forename: Norihiko
authors.initials: N
authors.lastname: Ito
authors.affiliation: Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kohno
authors.affiliation: Department of Gastroenterology, Kobe University, Kobe, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Azuma
authors.affiliation: Department of Energy Sciences, Tokyo Institute of Technology, Yokohama, Japan.
authors.forename: Akitoshi
authors.initials: A
authors.lastname: Okino
mesh_terms: D004347:Drug Interactions; D016166:Free Radical Scavengers / Q000494:pharmacology; D050296:Microbial Viability / Q000187:drug effects*; D058626:Plasma Gases / Q000737:chemistry* / Q000494:pharmacology*; D013045:Species Specificity; D013171:Spores, Bacterial / Q000187:drug effects
chemical_list: D016166:Free Radical Scavengers; D058626:Plasma Gases