Comparison of fungicidal properties of non-thermal plasma produced by corona discharge and dielectric barrier discharge

Julák, Jaroslav; Soušková, Hana; Scholtz, Vladimír; Kvasničková, Eva; Savická, D.; Kříha, Vítězslav

doi:10.1007/s12223-017-0535-6

Cited by 25 publications

(27 citation statements)

References 34 publications

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“…Under the natural conditions on the surface of human skin, bacteria are also inactivated within minutes, but they sometimes survive up to 10 min of exposure . Other microorganisms such as fungi are more resistant to NTP action, and their sensitivity varies considerably between species: yeasts and some filamentous dermatophytes may be inactivated within 30 min, whereas some species are not inactivated even after longer exposures . Biofilms exhibit a higher level of resistance to NTP than suspension cells because only the gram‐positive S. epidermidis biofilm displayed almost complete inhibition of metabolic activity after 60 min of exposure, whereas cell viability of gram‐negative bacteria and yeast was lowered by mere a 50% or more.…”

Section: Resultsmentioning

confidence: 99%

Prevention of biofilm re‐development on Ti‐6Al‐4V alloy by cometary discharge with a metallic grid

Vaňková

Válková

Kašparová

et al. 2018

Contributions to Plasma Physics

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The influence of a non-thermal plasma (NTP) on the gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa, the gram-positive bacterium Staphylococcus epidermidis, and the yeast Candida albicans grown on agar or in the biofilm form was compared. NTP was produced by a DC cometary discharge. The biofilms were grown on the surface of Ti-6Al-4V alloy often used in the manufacture of prosthetic implants. The exposure by NTP not only inhibited the surface growth of microorganisms in agar cultures but also significantly suppressed the viability of bacteria and yeast in biofilms and prevented its re-developed from persistent cells remaining in the lower layers of the biofilm. An almost complete prevention of biofilm re-development was achieved in the case of S. epidermidis; other microorganisms displayed substantial lowering of biofilm biomass and its metabolic activity. KEYWORDSbiofilm re-development prevention, cometary discharge, non-thermal plasma, prosthetic implants, Ti-6Al-4V alloy 1

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Section: Resultsmentioning

confidence: 99%

Prevention of biofilm re‐development on Ti‐6Al‐4V alloy by cometary discharge with a metallic grid

Vaňková

Válková

Kašparová

et al. 2018

Contributions to Plasma Physics

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“…Generally, the higher order organisms and spores require more exposure time than the vegetative bacterial cells for inactivation (Scholtz, Julák, & Kříha, 2010;Shi et al, 2011). Yeasts and molds are more resistant to the PAW treatment than bacterial cells (Julák, Soušková, et al, 2018;Kamgang-Youbi et al, 2009).…”

Section: Influence Of Microbial Strain On Antimicrobial Propertiesmentioning

confidence: 99%

Nonthermal Plasma–Liquid Interactions in Food Processing: A Review

Perinban

Orsat

Raghavan

2019

Comp Rev Food Sci Food Safe

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Nonthermal processing methods are often preferred over conventional food processing methods to ensure nutritional quality. Nonthermal plasma (NTP) is a new field of nonthermal processing technology and seeing increased interest for application in food preservation. In food applications of NTP, liquid interactions are the most prevalent. The NTP reactivity and product storability are altered during this interaction. The water activated by NTP (plasma‐activated water [PAW]) has gained considerable attention during recent years as a potential disinfectant in fruits and vegetable washing. However, detailed understanding of the interactions of NTP reactive species with food nutritional components in the presence of water and their stability in food is required to be explored to establish the potential of this emerging technology. Hence, the main objective of this review is to give a complete overview of existing NTP–liquid interactions. Further, their microbial inactivation mechanisms and the effects on food quality are discussed in detail. Most of the research findings have suggested the successful application of NTP and PAW for microbial inactivation and food preservation. Still, there are some research gaps identified and a complete analysis of the stability of plasma reactive species in food is still missing. By addressing these issues, along with the available research output in this field, it is possible that NTP can be successfully used as a food decontamination method in the near future.

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“…A special DC discharge called cometary was described by Julák (2010, 2010a) [10,11]. For a more detailed description of plasma sources, see for example Yousfi et al (2011) [12], Khun et al (2018) [13], or [14].…”

Section: Introductionmentioning

confidence: 99%

Inactivation of Dermatophytes Causing Onychomycosis and Its Therapy Using Non-Thermal Plasma

Lux

Dobiáš

Kuklová

et al. 2020

JoF

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Onychomycosis is one of the most common nail disorders. Its current treatment is not satisfactorily effective and often causes adverse side effects. This study aims to determine the optimal conditions for non-thermal plasma (NTP) inactivation of the most common dermatophytes in vitro and to apply it in patient`s therapy. The in vitro exposure to NTP produced by negative DC corona discharge caused full inactivation of Trichophyton spp. if applied during the early growth phases. This effect decreased to negligible inactivation with the exposure applied six days after inoculation. In a group of 40 patients with onychomycosis, NTP therapy was combined with nail plate abrasion and refreshment (NPAR) or treatment with antimycotics. The cohort included 17 patients treated with NPAR combined with NTP, 11 patients treated with antimycotics and NTP, and 12 patients treated with NPAR alone. The combination of NPAR and NTP resulted in clinical cure in more than 70% of patients. The synergistic effect of NPAR and NTP caused 85.7% improvement of mycological cure confirmed by negative microscopy and culture of the affected nail plate. We conclude that NTP can significantly improve the treatment of onychomycosis.

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Comparison of fungicidal properties of non-thermal plasma produced by corona discharge and dielectric barrier discharge

Cited by 25 publications

References 34 publications

Prevention of biofilm re‐development on Ti‐6Al‐4V alloy by cometary discharge with a metallic grid

Prevention of biofilm re‐development on Ti‐6Al‐4V alloy by cometary discharge with a metallic grid

Nonthermal Plasma–Liquid Interactions in Food Processing: A Review

Inactivation of Dermatophytes Causing Onychomycosis and Its Therapy Using Non-Thermal Plasma

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