Evaluation of the roles of reactive species, heat, and UV radiation in the inactivation of bacterial cells by air plasmas at atmospheric pressure

Laroussi, Mounir; Leipold, F.

doi:10.1016/j.ijms.2003.11.016

Cited by 764 publications

(542 citation statements)

References 13 publications

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“…Nonthermal plasma has been successfully utilized to kill a variety of microorganisms for many years. This observed germicidal effect is not linked to only one type of plasma generator subtype [3,4,[29][30][31][32]. However, there are several important aspects, when taking the germicidal efficacy of nonthermal plasma with respect to the localized environments.…”

Section: Plasma Spectra Characteristicsmentioning

confidence: 93%

Characterization, Properties and Applications of Nonthermal Plasma: A Novel Pulsed-Based Option

Ferrell¹,

Aleks²,

Galov³

et al. 2013

J Biotechnol Biomaterial

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The glow discharge from a novel spark-based nonthermal plasma generator is described and characterized using spectrophotometry, radiometry and gas detectors. Spectral information identified ultraviolet radiation within the plasma discharge. High levels of reactive oxygen and nitrogenous species were also detected within the analyzed plasma. The plasma discharge is found to have a significant germicidal effect on Gram-positive bacteria, independent of temperature increase. The ultraviolet radiation and ionized gaseous species are found to contribute to this observed effect, synergistically. Plasma filtration reduced germicidal survivability significantly. The liquid environment in which bacterial cells were exposed to the nonthermal plasma also was important, when determining the efficacy of nonthermal plasma, as a germicidal agent. Staphylococcus aureus cultures exposed to nonthermal plasma for two minutes within low nutrient sources, such as water or phosphate-buffered saline, had very low survival. Cultures exposed to the same plasma interval in nutrient rich liquids tolerated the plasma exposure better, and survived at higher numbers. This plasma discharge is highly bactericidal, due to the high concentrations of known antimicrobial agents, but its effectiveness is subject to a synergistic effect, that depends upon the surrounding environment.

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Section: Plasma Spectra Characteristicsmentioning

confidence: 93%

Characterization, Properties and Applications of Nonthermal Plasma: A Novel Pulsed-Based Option

Ferrell¹,

Aleks²,

Galov³

et al. 2013

J Biotechnol Biomaterial

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“…In recent years many investigations have been made in order to identify the role of single plasma agents for the microorganism inactivation process (Moisan et al, 2001;Laroussi and Leipold, 2004;Boudam et al, 2006;Brandenburg et al, 2007;Gaunt et al, 2006). Here, UV radiation and highly reactive species such as O, OH and NO x are identified as process relevant components, whereas heat plays a minor role.…”

Section: Active Plasma Agentsmentioning

confidence: 99%

Low temperature atmospheric pressure plasma sources for microbial decontamination

Ehlbeck¹,

Schnabel²,

Polák³

et al. 2010

J. Phys. D: Appl. Phys.

642

415

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To cite this version:J EhlbeckAbstract. The aim of this article is to provide a survey of plasma sources at atmospheric pressure used for microbicidal treatment. In order to consider the interdisciplinary character of this topic an introduction and definition of basic terms and procedures is given for plasma as well as for microbicidal issues. The list of plasma sources makes no claim to be complete, but to represent the main principles of plasma generation at atmospheric pressure and to give an example of their microbicidal efficiency. The interpretation of the microbicidal results remain difficult due to the non standardized methods uses by different authors and due to the fact that small variations in the set up can change the results dramatically.

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“…Plasma is also a source of ultraviolet radiation in UV-A and UV-B spectrum (Laroussi and Leipold, 2004) which has been successfully used for a long time for sterilization of medical devices (V. Scholtz et al, 2015).…”

Section: ■ 2 the Mechanism Of Low Temperature Plasma Action On Microomentioning

confidence: 99%

Plazmové technologie v potravinářském průmyslu: mini-review

et al. 2017

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Evaluation of the roles of reactive species, heat, and UV radiation in the inactivation of bacterial cells by air plasmas at atmospheric pressure

Cited by 764 publications

References 13 publications

Characterization, Properties and Applications of Nonthermal Plasma: A Novel Pulsed-Based Option

Characterization, Properties and Applications of Nonthermal Plasma: A Novel Pulsed-Based Option

Low temperature atmospheric pressure plasma sources for microbial decontamination

Plazmové technologie v potravinářském průmyslu: mini-review

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