Rapid Inactivation of Airborne Bacteria Using Atmospheric Pressure Dielectric Barrier Grating Discharge

Gallagher, M. J.; Vaze, Nachiket; Gangoli, Shailesh; Василец, В. Н.; Gutsol, A.; Milovanova, Tatyana N.; Anandan, Shivanthi; Murasko, Donna M.; Fridman, Alexander

doi:10.1109/tps.2007.905209

Cited by 129 publications

(90 citation statements)

References 28 publications

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“…Among the ROS, ozone, atomic oxygen, singlet oxygen, superoxide, peroxide, and hydroxyl radicals, are considered to contribute to the bacterial inactivation process (Joshi et al, 2011). In this work, protein and DNA strands, as well as physical effects causing microbial etching and erosion (Gallagher et al, 2007;Moreau et al, 2008). Our previous findings showed that the…”

Section: Accepted M Manuscriptmentioning

confidence: 69%

Cold plasma inactivation of internalised bacteria and biofilms for Salmonella enterica serovar Typhimurium, Listeria monocytogenes and Escherichia coli

Ziuzina¹,

Han²,

Cullen

et al. 2015

International Journal of Food Microbiology

162

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Microbial biofilms and bacteria internalised in produce tissue may reduce the effectiveness of decontamination methods. In this study, the inactivation efficacy of in-package atmospheric cold plasma (ACP) afterglow was investigated against Salmonella Typhimurium, Listeria monocytogenes and Escherichia coli in the forms of planktonic cultures, biofilms formed on lettuce and associated bacteria internalised in lettuce tissue. Prepared lettuce broth (3%) was inoculated with bacteria resulting in a final concentration of ~7.0 log 10 CFU/ml. For biofilm formation and internalisation, lettuce pieces (5 x 5 cm) were dip-inoculated in bacterial suspension of ~7.0 log 10 CFU/ml for 2 h and further incubated for 0, 24 and 48 h at either 4°C or room temperature (~22°C) in combination with light/dark photoperiod or at 4°C under dark conditions. Inoculated samples were sealed inside a rigid polypropylene container and However, the existence of biofilms and internalised bacteria should be considered for further optimisation of ACP treatment parameters in order to achieve an effective control of the realistic challenges posed by foodborne pathogens.

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Section: Accepted M Manuscriptmentioning

confidence: 69%

Cold plasma inactivation of internalised bacteria and biofilms for Salmonella enterica serovar Typhimurium, Listeria monocytogenes and Escherichia coli

Ziuzina¹,

Han²,

Cullen

et al. 2015

International Journal of Food Microbiology

162

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show abstract

“…surface sterilization and heat sensitive medical material (Laroussi, 1996;Lerouge et al, 2001;Nehra et al, 2008;Fridman, 2008), living tissue treatment such as wound healing and sterilization (Kieft et al, 2005;Laroussi, 2009), blood coagulation (Fridman, 2008), skin treatments Fridman, 2008), bacteria inactivation such as gram positive, negative, aerobic, anaerobic (Moisan et al, 2001;Laroussi et al, 2002;Sladek et al, 2004;Goore et al, 2006;Gallagher et al, 2007;Martines et al, 2009;García et al, 2011), spores (Moisan et al, 2006;Laroussi et al, 2002;Fridman et al, 2010), disinfection of dental cavities or bacterial contaminated food (Sladek et al, 2004;Fridman et al, 2010), and functional or structural modification of cancer cells (Stoffels, 2003;Fridman, 2008;Zimheld et al, 2010;Robert et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Toxicity and Genotoxicity in HeLa and E. coli Cells Caused by a Helium Plasma Needle

García-Alcantara

López-Callejas

Serment-Guerrero

et al. 2013

APR

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The aim of this study is to determine the toxic and genotoxic damages produced by a helium plasma needle upon HeLa and E. coli (OG100 and PQ30) cell cultures. For HeLa cells survival (MTT) and microelectrophoresis comet) assays were performed; meanwhile in E. coli, viable count and genotoxicity by the chromotest were evaluated. The outcomes indicate that the plasma exposures on HeLa cells undergo more toxicity and genotoxicity as treatment time increases. With respect to E. coli, plasma exposure generated toxicity, but no genotoxicity could be detected with this system. In the strain OG100, defective in a protection mechanism to oxidizing agents, there was a reduction in the survival of one order of magnitude compared to the wild type strain PQ30. It suggests that such reduction is due to the plasma by means of the reactive oxygen and nitrogen species (RONS) generated during atmospheric air interaction.

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“…The success of nonthermal plasma technologies in inactivating many microorganisms, such as viruses, Gram-negative, and Gram-positive bacteria, on the surfaces and in aqueous solutions is well documented [20][21][22][23][24][25]. Gallagher et al (2007) [26] removed 99.999% of indoor Escherichia coli bioaerosols in a 2-min testing time using nonthermal plasma technology. The most common plasma inactivation mechanisms lethally affecting microorganisms are UVC and VUV irradiation in a wavelength range below 300 nm, diffusion of oxygen species (O, O 3 , and O or oxygen-containing radicals (e.g., OH and NO), bombardment on the cell wall by charged particles (electrons and ions), and localized, periodical, and short-term heating of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

“…All of the various plasma active components can synergistically interact. Furthermore, Gallagher et al (2007) [26] identified OH as a major component of the inactivation mechanism in the inhibition of microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Inactivation Efficiency of Bioaerosols Using Carbon Nanotube Plasma

Yang

Huang

Luo

et al. 2011

CLEAN Soil Air Water

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The purpose of this study was to inactivate indoor bioaerosols using carbon nanotube corona discharge plasma technology. Escherichia coli, Bacillus subtilis, and l virus bioaerosols were generated using a Collison nebulizer. The effect of various factors, including the flow rate (30, 60, and 90 lpm) and the operating voltages (À1.5, À3.0, À4.5, À6.0, and À7.5 kV), on bioaerosol reduction was examined. The results indicated that the corona discharge using the carbon nanotube electrodes decreased the threshold voltage of plasma. The inactivation efficiencies of E. coli bioaerosols using the carbon nanotube corona discharge system at discharge voltages of À1.5, À3.0, À4.5, À6.0, and À7.5 kV were 57, 61, 71, 93, and 97%, respectively. The corona discharge system using carbon nanotube electrodes had higher bioaerosol inactivation efficiency than the corona discharge system using stainless steel electrodes. The results further demonstrated that the inactivation efficiency decreased with an increasing flow rate. The inactivation efficiencies of E. coli, B. subtilis, and l virus bioaerosols using carbon nanotube corona discharge plasma were 93, 88, and 81%, respectively.

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Rapid Inactivation of Airborne Bacteria Using Atmospheric Pressure Dielectric Barrier Grating Discharge

Cited by 129 publications

References 28 publications

Cold plasma inactivation of internalised bacteria and biofilms for Salmonella enterica serovar Typhimurium, Listeria monocytogenes and Escherichia coli

Cold plasma inactivation of internalised bacteria and biofilms for Salmonella enterica serovar Typhimurium, Listeria monocytogenes and Escherichia coli

Toxicity and Genotoxicity in HeLa and E. coli Cells Caused by a Helium Plasma Needle

Inactivation Efficiency of Bioaerosols Using Carbon Nanotube Plasma

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