Lethal effect of the gliding arc discharges on Erwinia spp.

Moreau, Morgane J. J.; Feuilloley, Marc; Orange, Nicole; Brisset, Jean‐Louis

doi:10.1111/j.1365-2672.2004.02535.x

Cited by 73 publications

(70 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The plasma device utilized was a nonthermal quenched plasma device of the gliding arc type operating at atmospheric pressure with humid air as the plasma gas. The design of the device and the procedure for gas discharge have previously been described (22). Under operating conditions, the feed gas was provided by an air compressor.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Evidence of Temporal Postdischarge Decontamination of Bacteria by Gliding Electric Discharges: Application to Hafnia alvei

Kamgang‐Youbi

Herry

Bellon‐Fontaine

et al. 2007

Appl Environ Microbiol

View full text Add to dashboard Cite

This study aimed to characterize the bacterium-destroying properties of a gliding arc plasma device during electric discharges and also under temporal postdischarge conditions (i.e., when the discharge was switched off). This phenomenon was reported for the first time in the literature in the case of the plasma destruction of microorganisms. When cells of a model bacterium, Hafnia alvei, were exposed to electric discharges, followed or not followed by temporal postdischarges, the survival curves exhibited a shoulder and then log-linear decay. These destruction kinetics were modeled using GinaFiT, a freeware tool to assess microbial survival curves, and adjustment parameters were determined. The efficiency of postdischarge treatments was clearly affected by the discharge time (t*); both the shoulder length and the inactivation rate k max were linearly modified as a function of t*. Nevertheless, all conditions tested (t* ranging from 2 to 5 min) made it possible to achieve an abatement of at least 7 decimal logarithm units. Postdischarge treatment was also efficient against bacteria not subjected to direct discharge, and the disinfecting properties of "plasma-activated water" were dependent on the treatment time for the solution. Water treated with plasma for 2 min achieved a 3.7-decimal-logarithm-unit reduction in 20 min after application to cells, and abatement greater than 7 decimal logarithm units resulted from the same contact time with water activated with plasma for 10 min. These disinfecting properties were maintained during storage of activated water for 30 min. After that, they declined as the storage time increased.

show abstract

Section: Methodsmentioning

confidence: 99%

“…As a result, the gliding discharge device was first studied successfully for the treatment of gases (5) and liquids (24) to abate chemical pollutants. More recently, it was also tested successfully for decontamination of microorganisms (12,22), which represents one of the most interesting applications of atmospheric pressure plasmas in recent years.…”

mentioning

confidence: 99%

Evidence of Temporal Postdischarge Decontamination of Bacteria by Gliding Electric Discharges: Application to Hafnia alvei

Kamgang‐Youbi

Herry

Bellon‐Fontaine

et al. 2007

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…It is well established that electroporation of membranes is induced by pulsed electric fields and it appears that plasma acts on similar lines inducing perforations in the membranes of micro-organisms (Sale and Hamilton 1967;Pothakamury et al 1995;Wouters and Smelt 1997). In addition to generating pores, humid air plasma additionally provokes a marked acidification of the medium (Moreau et al 2005;Moreau et al 2007). …”

Section: Action On Cell Components and Functionsmentioning

confidence: 99%

Nonthermal Plasma Inactivation of Food-Borne Pathogens

Misra¹,

Tiwari

Raghavarao³

et al. 2011

Food Eng Rev

504

276

View full text Add to dashboard Cite

Non-thermal plasma (NTP) is electrically energized matter, composed of highly reactive species including gas molecules, charged particles in the form of positive ions, negative ions, free radicals, electrons and quanta of electromagnetic radiation (photons) at near-room temperature. NTP is an emerging nonthermal technology with potential applications for decontamination in the food industries. An upsurge in the research activities for plasma based inactivation of food borne pathogens is evident in the recent years. These studies have shown that NTP can be used for the surface decontamination of raw produce, dried nuts and the packaging materials etc. This paper reviews the action of plasma agents on the microbial classes and describes proven and potential applications in food processing. Novel developments in the technology and a future outlook for the application to foods are discussed.

show abstract

“…Atmospheric nonthermal plasmas of the gliding-arc type (Glidarc) (9, 25) were found to be efficient against microorganisms for treatments performed under burning discharge (12,13,22,26), and the inactivation of cells in water could continue after the discharge had been switched off (13). Microbial cells were also killed by contact with water that had first been activated by discharges (and so-called plasma-activated water [PAW]) without being themselves subjected to the plasma plume (14, 15).…”

mentioning

confidence: 99%

Combined Effects of Long-Living Chemical Species during Microbial Inactivation Using Atmospheric Plasma-Treated Water

Naïtali

Kamgang‐Youbi

Herry

et al. 2010

Appl Environ Microbiol

282

226

View full text Add to dashboard Cite

Electrical discharges in humid air at atmospheric pressure (nonthermal quenched plasma) generate longlived chemical species in water that are efficient for microbial decontamination. The major role of nitrites was evidenced together with a synergistic effect of nitrates and H 2 O 2 and matching acidification. Other possible active compounds are considered, e.g., peroxynitrous acid.Nonthermal plasma gases are currently under study as potential alternatives to conventional sterilization techniques in numerous settings (the food industry, hospitals). Atmospheric nonthermal plasmas of the gliding-arc type (Glidarc) (9, 25) were found to be efficient against microorganisms for treatments performed under burning discharge (12,13,22,26), and the inactivation of cells in water could continue after the discharge had been switched off (13). Microbial cells were also killed by contact with water that had first been activated by discharges (and so-called plasma-activated water [PAW]) without being themselves subjected to the plasma plume (14, 15). Studies performed hitherto using Glidarc in the context of microbial decontamination have aimed to test the influence of biological (i.e., population level, planktonic or adherent state [14]) and physical parameters on decontamination efficiency. Little is known of the mechanisms of action, especially when PAW is used.UV radiation, charged particles, and temperature are some of the principal factors governing microbial inactivation under plasma technology (20), but they are not relevant for PAW decontamination because the burning discharge is switched off during treatment. It is likely that reactive-nitrogen-and -oxygen-based species play an important role in the lethal effect of nonequilibrium atmospheric air-based plasma (10,20). DNA, RNA, proteins, and lipids are the principal targets of these oxidants (4, 8). The main radical species present in the Glidarc plasma plume have been identified as ⅐ OH and NO ⅐ when humid air is the working gas (1). These radicals are precursors of other active species in water, such as nitrates, nitrites, and hydrogen peroxide (3), which endow the medium with high and sustainable reactivity. The efficiency of these long-lived chemical species in removing chemical pollutants was yet evidenced (24), but their implication in microbial inactivation by PAW was demonstrated for the first time here. Chemical species are also responsible for acidification (2) which role in the antimicrobial activity was also considered during the present study.PAW was produced by application of Glidarc (5 min) over 20 ml of sterile distilled water. The design of the device and the procedure for gas discharge have been described previously (23) , and 1.6 Ϯ 0.2 mmol liter Ϫ1 nitrites (Griess reagent; VWR, Fontenay-sous-Bois, France). Its pH value was 3.0 Ϯ 0.1. No major change in PAW characteristics was detected 30 min after the treatment (corresponding to the maximum period of disinfection). The contributions of nitrites, nitrates, and H 2 O 2 to the lethal effect of PAW w...

show abstract

Lethal effect of the gliding arc discharges on Erwinia spp.

Cited by 73 publications

References 22 publications

Evidence of Temporal Postdischarge Decontamination of Bacteria by Gliding Electric Discharges: Application to Hafnia alvei

Evidence of Temporal Postdischarge Decontamination of Bacteria by Gliding Electric Discharges: Application to Hafnia alvei

Nonthermal Plasma Inactivation of Food-Borne Pathogens

Combined Effects of Long-Living Chemical Species during Microbial Inactivation Using Atmospheric Plasma-Treated Water

Contact Info

Product

Resources

About