Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

TiO₂-coated electrodes for pulsed electric field treatment of microorganisms

Qin, Si and Timoshkin, Igor V. and MacLean, Michelle and MacGregor, Scott J. and Wilson, Mark P. and Given, Martin J. and Wang, Tao and Anderson, John G. (2016) TiO₂-coated electrodes for pulsed electric field treatment of microorganisms. IEEE Transactions on Plasma Science, 44 (10). pp. 2121-2128. ISSN 0093-3813

[img]
Preview
Text (Qin-etal-IEEE-TOPS-2016-electrodes-for-pulsed-electric-field-treatment-of-microorganisms)
Qin_etal_IEEE_TOPS_2016_electrodes_for_pulsed_electric_field_treatment_of_microorganisms.pdf - Accepted Author Manuscript

Download (735kB) | Preview

Abstract

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 TiO2 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 TiO2-coated electrodes can be successfully used for the PEF treatment of microorganisms: 3-log10 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 TiO2 provide better performance as compared with the traditional uncoated electrodes.