An investigation into the biocidal effect of high voltage AC/DC atmospheric corona discharges on bacteria, yeasts, fungi and algae

Korachi, May; Turan, Zişan; Şentürk, Kenan; Şahın, Fikrettin; Aslan, Necdet

doi:10.1016/j.elstat.2009.03.002

Cited by 83 publications

(49 citation statements)

References 14 publications

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“…Attempts have previously been made to study the inactivation effect of different corona discharges on microbes (Julak et al 2006;Fletcher et al 2007;Korachi et al 2009;Machala et al 2010;Kim et al 2015). Cold atmospheric air direct current (DC) discharges (streamer corona) can be used efficiently for biodecontamination of water and surfaces contaminated by bacteria (Salmonella Typhimurium) (Machala et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Corona discharge plasma jet for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on inoculated pork and its impact on meat quality attributes

2015

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Corona discharge plasma jet (CDPJ) was used for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes inoculated experimentally onto the surfaces of fresh and frozen pork. CDPJ was generated with an output voltage of 20 kV direct current and a frequency of 58 kHz. Optimal inactivation was found with plasma created at a current of 1.5 A, and at a span length of 25 mm between the plasma electrode tip and the sample. Following CDPJ treatment (0-120 s) of pork samples, reductions in E. coli O157:H7 and L. monocytogenes were 1.5 log and >1.0 log units, respectively. The inactivation pattern fitted well to the Singh-Heldman model or pseudo-first-order kinetics. Compared to untreated pork, with the exception of color and appearance, no statistically significant (P > 0.05) changes were observed in volatile basic nitrogen, peroxide value, or 2-thiobarbituric acid reactive substances of CDPJ-treated pork. Furthermore, CDPJ treatment had no significant impact on the sensory characteristics of frozen pork although there was some effect on unfrozen pork.

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Section: Introductionmentioning

confidence: 99%

Corona discharge plasma jet for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on inoculated pork and its impact on meat quality attributes

2015

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“…These active species play a crucial role in the microbial inactivation mechanism, since they directly interact with the bacterial membrane. These active species have short life in the gas phase thereby disappearing in milliseconds after they are produced and can also dissolve in liquids 22) . In this study it was noted that A. actinomycetemcomitans was weak compared to other two microorganisms.…”

Section: Sterilization Test On Agar Platesmentioning

confidence: 99%

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

Abonti

Kaku

Kojima

et al. 2016

Dental Materials Journal

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The purpose of this study is to evaluate the sterilization effects of a newly developed low temperature multi gas plasma jet on oral pathogenic microorganisms (Streptococcus mutans [S. mutans], Lactobacillus fermentum [L. fermentum], Aggregatibacter actinomycetemcomitans [A. actinomycetemcomitans]). Plasma gas which generated from O2, N2, Ar and 50% (O2+N2) was irradiated to the microbes. Effect of O2 plasma irradiation on S. mutans under scanning electron microscopy (SEM) was also observed. O2 plasma was directly applied to dental plaque on human extracted tooth. Then, the depth of enamel resorption area was noted by nanoscale hybrid microscope. O2 had the best sterilizing effect for all microbes. The potent bactericidal effect of plasma irradiation was also observed by SEM. Decalcification of enamel was noted significantly lower in plasma irradiated tooth surface compared to no plasma exposure group. These findings revealed that multi gas plasma jet has great potential to be used for dental treatment.

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“…Inactivation of microorganisms is relevant to the presence of various reactive plasma species, such as OHÁ, HÁ, OÁ, and HO 2 and molecular species such as H 2 O 2 , H 2 , and O 2 . Electric field, ultraviolet radiation, and shock waves are other parameters of plasma which may have different positive effects on the treatment of water [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Water treatment by the AC gliding arc air plasma

2017

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In this study, the effects of gliding arc (G Arc) plasma system on the treatment of water have been investigated experimentally. An AC power supply of 15 kV potential difference at 50 Hz frequency was employed to generate plasma. Plasma density and temperature were measured using spectroscopic method. The water was contaminated with staphylococcus aureus (Gram-positive) and salmonella bacteria (Gram-negative), and Penicillium (mold fungus) individually. pH, hydrogen peroxide, and nitride contents of treated water were measured after plasma treatment. Decontamination of treated water was determined using colony counting method. Results indicate that G Arc plasma is a powerful and green tool to decontaminate water without producing any byproducts.

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An investigation into the biocidal effect of high voltage AC/DC atmospheric corona discharges on bacteria, yeasts, fungi and algae

Cited by 83 publications

References 14 publications

Corona discharge plasma jet for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on inoculated pork and its impact on meat quality attributes

Corona discharge plasma jet for inactivation of Escherichia coli O157:H7 and Listeria monocytogenes on inoculated pork and its impact on meat quality attributes

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

Water treatment by the AC gliding arc air plasma

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