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Bidirectional mass transfer‐based generation of plasma‐activated water mist with antibacterial properties
Author(s) -
Sysolyatina Elena V.,
Lavrikova Aleksandra Y.,
Loleyt Roman A.,
Vasilieva Elena V.,
Abdulkadieva Mariam A.,
Ermolaeva Svetlana A.,
Sofronov Aleksey V.
Publication year - 2020
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.202000058
Subject(s) - listeria monocytogenes , mist , biofilm , chemistry , reactive oxygen species , escherichia coli , mass transfer , radical , salmonella , oxygen , microbiology and biotechnology , plasma , reactive nitrogen species , bacteria , chromatography , biology , biochemistry , organic chemistry , physics , genetics , quantum mechanics , meteorology , gene
Plasma‐activated water mist (PAWM) is obtained by the ignition of plasma within an air–vapor mixture. PAWM demonstrates significant antibacterial properties, decreasing loads of foodborne pathogens by a factor of 35.5 for Listeria monocytogenes , 166 for Salmonella Typhimurium, and 266 for Escherichia coli O157:H7 within 15 s. Bacterial biofilms have a similar species‐dependant susceptibility. Biofilms of L. monocytogenes , Salmonella Typhimurium, and E. coli O157:H7 are destroyed by 44%, 77%, and 71%, respectively, after being treated for 2 min. Obtained results suggest importance of short‐lived radicals, because PAWM condensate is not bactericidal. A new model of PAW generation as a cyclic process of oxidation reactive nitrogen species by reactive oxygen species, which occurs during effective bidirectional mass transfer between heavily humid air and water mist in plasma discharge, is presented.