Sterilization using dielectric barrier discharge at atmospheric pressure

Tanino, Masakazu; Wang, Xilu; Takashima, K.; Katsura, Shinji; Mizuno, Akira

doi:10.1109/ias.2005.1518421

Cited by 34 publications

(26 citation statements)

References 15 publications

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“…Many publications relating to the sterilization or inactivation of several bacteria strains [20][21][22], yeast [23,24] and viruses [25] exist. Yet only few publications have considered the effects of atmospheric pressure plasmas on fungal spores [10,26,27] and very little work exists on plasma treatment of fungi at vegetative state (hyphae/ mycelia).…”

Section: Introductionmentioning

confidence: 99%

Fungicidal effects of an atmospheric pressure gas discharge and degradation mechanisms

Avramidis¹,

Stüwe

Wascher³

et al. 2010

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

Fungicidal effects of an atmospheric pressure gas discharge and degradation mechanisms

Avramidis¹,

Stüwe

Wascher³

et al. 2010

Surface and Coatings Technology

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“…Therefore, a DBD can be applied in direct contact with living tissues and open injuries without causing any damage [3]. During the DBD treatment the photons, electrons, ions and active chemical species from the plasma reach the surface of a biologically contaminated object and can eventually lead to its sterilization [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Bacterial sterilization by a dielectric barrier discharge (DBD) in air

Kostov

Rocha

Koga-Ito

et al. 2010

Surface and Coatings Technology

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a b s t r a c tCold atmospheric plasma treatment of microorganisms and living tissues has become a popular topic in modern plasma physics and in medical science. The plasma is capable of bacterial inactivation and noninflammatory tissue modification, which makes it an attractive tool for treatment of skin diseases, open injuries and dental caries. Because of their enhanced plasma chemistry, Dielectric Barrier Discharges (DBDs) have been widely investigated for some emerging applications such as biological and chemical decontamination of media at ambient conditions. Despite the high breakdown voltage in air at atmospheric pressure, the average current of DBD discharges is low. Therefore, a DBD can be applied in direct contact with biological objects without causing any damage. In this work a 60 Hz DBD reactor, which generates cold atmospheric plasma inside Petri dishes with bacterial culture, is investigated. Samples of Staphylococcus aureus, a Gram-positive bacterium and Escherichia coli a Gram-negative bacterium were selected for this study. The bacterial suspensions were evenly spread on agar media planted in Petri dishes. The reactor electrodes were placed outside the Petri dish, thus eliminating the risk of samples microbial contamination. The covered Petri dish with agar medium in it serves as dielectric barrier during the treatment. The plasma processing was conducted at same discharge power (∼ 1.0 W) with different exposure time. Sterilization of E. coli and S. aureus was achieved for less than 20 min. Plasma induced structural damages of bacteria were investigated by Scanning Electron Microscopy.

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“…The cell destruction rate of this method was also higher compared with conventional methods for B. subtilis spores. The cell destruction by DBD is mainly due to puncture of the cells [27].…”

Section: Resultsmentioning

confidence: 99%