Atmospheric plasma discharge sterilization effects on whole cell fatty acid profiles of Escherichia coli and Staphylococcus aureus

Pulsed periodic corona discharges for biological decontamination

“…Dobrynin et al [5] investigated inactivation of E.coli by DC corona discharges and concluded that the main mechanism of inactivation was peroxidation of cell membranes. Korachi et al [6] observed that corona discharges generated in air above Petri dishes filled with water contaminated with Ecoli and Saureus do not cause significant changes in the fatty acid content of biological membranes. The authors suggested that potential mechanisms which are responsible for bacterial inactivation induced by corona discharges may include changes in function of the membrane's ionic channels.…”

“…It has been shown that these discharges can be used for ozone generation [1], electrostatic precipitation [2], the removal of NO and S02 from flue gas through radical reactions [3], the generation of ionic wind [4] and biological decontamination [5], [6]. Currently, there is a growing interest in the practical applications of corona discharges for the generation and modification of gas flow and bacterial inactivation.…”

“…Currently, there is a growing interest in the practical applications of corona discharges for the generation and modification of gas flow and bacterial inactivation. papers [5][6][7][8], however the complete mechanism of inactivation of microorganisms is still unclear. [5] and [6] discuss inactivation of microorganisms by DC positive and negative corona discharges in different gases.…”

Irradiation effects of low temperature multi gas plasma jet on oral bacteria

“…These are cell surface etching induced by reactive species formed during plasma generation, volatilization of compounds and intrinsic photodesorption of ultraviolet (UV) photons and the destruction of genetic material. These deactivation mechanisms cause several reactions in bacterial cells including lipid peroxidation of poly-unsaturated fatty acids, oxidation of amino acids and DNA oxidation 17,18) . Also in the present study of SEM observation, damage on the cell walls with biofluid leakage and fragments of cells of S. mutans after plasma irradiation were detected.…”

Terminal sterilization: Conventional methods versus emerging cold atmospheric pressure plasma technology for non‐viable biological tissues

“…[110] Notably, CAP is also effective on the sterilization resistant Deinococcus radiodurans bacteria. [112] Less resistant vegetative bacteria have also been tested against the antimicrobial activity of CAP, and were eliminated with different degrees of survival, including gramnegative: Escherichia coli [111,113,114] , Salmonella typhimuriu [115] , and gram-positive Staphylocuccus epidermidis [90,113,116] , Staphylococcus aureus [90,114] , Micrococcus luteus [95] , Streptococcus pyogenes [90] , Enterococcus faecalis [117] and Enterococcus faecium. [90] Gramnegative bacteria are more susceptible to gas plasma treatments than gram-positive [104,118] and differences in susceptibility are thought to be due to variation in the thickness of the peptidoglycan murein layer in the bacterial cell wall.…”