Demonstration of a Novel Pulsed Electric Field Technique Generating Neither Conduction Currents Nor Joule Effects

Novac, B.M.; Banakhr, Fahd; Smith, I.R.; Pécastaing, Laurent; Ruscassie, R.; Ferron, Antoine Silvestre de; Pignolet, P.

doi:10.1109/tps.2013.2293915

Cited by 21 publications

(26 citation statements)

References 20 publications

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“…It has been shown that further increase in the field strength could result in a more prominent inactivation effect. For example, PEF impulses with magnitudes up to 110 kV/cm [14], and 200 kV/cm [15], were used to inactivate E. coli and Bacillus subtilis (bacteria). Such high field magnitudes require reasonably short (typically sub-s) duration of PEF impulses in order avoid formation of spark breakdown in the treatment cell.…”

Section: Introductionmentioning

confidence: 99%

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

Qin

Timoshkin

Maclean

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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Pulsed electric field (PEF) treatment can be used for non-thermal inactivation of microorganisms. The aim of this paper is to investigate PEF treatment of yeast, Saccharomyces cerevisiae, using three different field waveforms: square; non-oscillating exponential and oscillating exponential. The PEF system used in this paper consists of a pulsed power supply and a parallel-plane metallic electrodes treatment cell located in an air-pressurised chamber. PEF treatment of the yeast was conducted using electric field impulses with magnitudes of 67 kV/cm and 80 kV/cm. The efficacy of the PEF treatment for inactivation of the yeast cells was assessed by comparison of the PEFtreated and untreated yeast populations. Results showed that 3-log 10 reduction in the yeast population can be achieved with 100 impulses using all tested waveforms. Amongst all three tested waveforms non-oscillating exponential impulses demonstrated improved PEF performance. The effect of duration of treatment and peak magnitude of the field on the PEF process is discussed.

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Section: Introductionmentioning

confidence: 99%

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

Qin

Timoshkin

Maclean

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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“…Thus, the direct contact between the metal surface and the liquid is prevented, and conduction current through the liquid is eliminated. This concept was proven theoretically in [16] and tested experimentally in [17]. The results presented in [17] showed that a treatment cell with dielectric electrodes could be successfully used for inactivation of the bacterium Escherichia coli, while maintaining a relatively low sample temperature and low energy consumption.…”

Section: Introductionmentioning

confidence: 96%

“…This concept was proven theoretically in [16] and tested experimentally in [17]. The results presented in [17] showed that a treatment cell with dielectric electrodes could be successfully used for inactivation of the bacterium Escherichia coli, while maintaining a relatively low sample temperature and low energy consumption. However, the maximum field magnitude which was tested in [17], 200 kV/cm, is significantly higher than a typical field used in the PEF treatment, ~ 30 kV/cm.…”

Section: Introductionmentioning

confidence: 96%

“…The results presented in [17] showed that a treatment cell with dielectric electrodes could be successfully used for inactivation of the bacterium Escherichia coli, while maintaining a relatively low sample temperature and low energy consumption. However, the maximum field magnitude which was tested in [17], 200 kV/cm, is significantly higher than a typical field used in the PEF treatment, ~ 30 kV/cm. Also, no comparison between the PEF performance achieved in the novel and traditional PEF treatment cells was made.…”

Section: Introductionmentioning

confidence: 99%

“…A conceptually new treatment cell with dielectric electrodes is discussed in [16] and [17]: it is proposed to cover the electrodes of the cell with a layer of dielectric material with a high permittivity. Thus, the direct contact between the metal surface and the liquid is prevented, and conduction current through the liquid is eliminated.…”

Section: Introductionmentioning

confidence: 99%

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TiO₂-Coated Electrodes for Pulsed Electric Field Treatment of Microorganisms

Qin

Timoshkin

Maclean

et al. 2016

IEEE Trans. Plasma Sci.

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Pulsed electric fields (PEF) can cause irreversible damage to bio-membranes and may result in inactivation of microorganisms. The aim of this paper is to investigate the PEF treatment of the yeast Saccharomyces cerevisiae, using a novel treatment cell with parallel-plane electrodes coated with a 2 µm thin TiO 2 film. Two different PEF waveforms, square and exponential, with magnitudes of 67 kV/cm and 80 kV/cm, were used in this study. The efficacy of the PEF treatment was assessed by comparison of the surviving treated and untreated yeast populations, and it was shown that a treatment cell with TiO 2-coated electrodes can be successfully used for the PEF treatment of microorganisms: 3-log 10 reduction in the yeast population was achieved with 100 impulses. The energy efficacy of the PEF process in the proposed treatment cell has been compared with the energy losses in the PEF treatment cell with uncoated, conductive electrodes. It is shown that the electrodes coated with TiO 2 provide better performance as compared with the traditional uncoated electrodes. Index Terms-Pulsed electric field, TiO 2-coated electrodes, inactivation of microorganisms, yeast.

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Conduction Current in Nanosecond-Pulse Diffuse Discharges at Atmospheric Pressure

Zhang

Shao

2023

Springer Series in Plasma Science and Technology

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Demonstration of a Novel Pulsed Electric Field Technique Generating Neither Conduction Currents Nor Joule Effects

Cited by 21 publications

References 20 publications

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

TiO₂-Coated Electrodes for Pulsed Electric Field Treatment of Microorganisms

Conduction Current in Nanosecond-Pulse Diffuse Discharges at Atmospheric Pressure

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Demonstration of a Novel Pulsed Electric Field Technique Generating Neither Conduction Currents Nor Joule Effects

Cited by 21 publications

References 20 publications

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

Pulsed electric field treatment of saccharomyces cerevisiae using different waveforms

TiO2-Coated Electrodes for Pulsed Electric Field Treatment of Microorganisms

Conduction Current in Nanosecond-Pulse Diffuse Discharges at Atmospheric Pressure

Contact Info

Product

Resources

About

TiO₂-Coated Electrodes for Pulsed Electric Field Treatment of Microorganisms