Pulsed light technology for microbial inactivation

A. Endarko; M. MacLean; I. Timoshkin; S.J. MacGregor; J.G. Anderson

Pulsed light technology for microbial inactivation

A. Endarko, M. MacLean, I. Timoshkin, S.J. MacGregor, J.G. Anderson

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

Abstract

Pulsed ultraviolet-rich (PUV) light is a novel nonthermal high-peak power technology, which can achieve rapid inactivation of pathogenic and spoilage microorganisms. The aim of this study was to determine the effect of PUV-light for the inactivation of the bacterial species Staphylococcus epidermidis and the yeast species Saccharomyces cerevisiae whilst in liquid suspension. Results demonstrate that PUV-light exposure is highly microbicidal, with a 7-logl o reduction of S. epidermidis being achieved after application of less than 10 pulses. S. cerevisiae was also inactivated, with 5-logl o and 7-logl o reductions being achieved after exposure to 10 and 75 pulses, respectively. This study also demonstrates that agitation of the sample during PUV exposure significantly enhances the inactivation rate of densely populated microbial suspensions.

Original language	English
Pages	1-4
Number of pages	4
Publication status	Published - 4 Sept 2009
Event	The 44th International Universities' Power Engineering Conference - Glasgow, United Kingdom Duration: 1 Sept 2009 → 4 Sept 2009

Conference

Conference	The 44th International Universities' Power Engineering Conference
Country/Territory	United Kingdom
City	Glasgow
Period	1/09/09 → 4/09/09

Keywords

flashlamp
pulsed ultraviolet
high-peak power
pathogenic bacteria
sterilization

Cite this

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title = "Pulsed light technology for microbial inactivation",

abstract = "Pulsed ultraviolet-rich (PUV) light is a novel nonthermal high-peak power technology, which can achieve rapid inactivation of pathogenic and spoilage microorganisms. The aim of this study was to determine the effect of PUV-light for the inactivation of the bacterial species Staphylococcus epidermidis and the yeast species Saccharomyces cerevisiae whilst in liquid suspension. Results demonstrate that PUV-light exposure is highly microbicidal, with a 7-logl o reduction of S. epidermidis being achieved after application of less than 10 pulses. S. cerevisiae was also inactivated, with 5-logl o and 7-logl o reductions being achieved after exposure to 10 and 75 pulses, respectively. This study also demonstrates that agitation of the sample during PUV exposure significantly enhances the inactivation rate of densely populated microbial suspensions.",

keywords = "flashlamp, pulsed ultraviolet, high-peak power, pathogenic bacteria, sterilization",

author = "A. Endarko and M. MacLean and I. Timoshkin and S.J. MacGregor and J.G. Anderson",

year = "2009",

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language = "English",

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note = "The 44th International Universities' Power Engineering Conference ; Conference date: 01-09-2009 Through 04-09-2009",

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TY - CONF

T1 - Pulsed light technology for microbial inactivation

AU - Endarko, A.

AU - MacLean, M.

AU - Timoshkin, I.

AU - MacGregor, S.J.

AU - Anderson, J.G.

PY - 2009/9/4

Y1 - 2009/9/4

N2 - Pulsed ultraviolet-rich (PUV) light is a novel nonthermal high-peak power technology, which can achieve rapid inactivation of pathogenic and spoilage microorganisms. The aim of this study was to determine the effect of PUV-light for the inactivation of the bacterial species Staphylococcus epidermidis and the yeast species Saccharomyces cerevisiae whilst in liquid suspension. Results demonstrate that PUV-light exposure is highly microbicidal, with a 7-logl o reduction of S. epidermidis being achieved after application of less than 10 pulses. S. cerevisiae was also inactivated, with 5-logl o and 7-logl o reductions being achieved after exposure to 10 and 75 pulses, respectively. This study also demonstrates that agitation of the sample during PUV exposure significantly enhances the inactivation rate of densely populated microbial suspensions.

AB - Pulsed ultraviolet-rich (PUV) light is a novel nonthermal high-peak power technology, which can achieve rapid inactivation of pathogenic and spoilage microorganisms. The aim of this study was to determine the effect of PUV-light for the inactivation of the bacterial species Staphylococcus epidermidis and the yeast species Saccharomyces cerevisiae whilst in liquid suspension. Results demonstrate that PUV-light exposure is highly microbicidal, with a 7-logl o reduction of S. epidermidis being achieved after application of less than 10 pulses. S. cerevisiae was also inactivated, with 5-logl o and 7-logl o reductions being achieved after exposure to 10 and 75 pulses, respectively. This study also demonstrates that agitation of the sample during PUV exposure significantly enhances the inactivation rate of densely populated microbial suspensions.

KW - flashlamp

KW - pulsed ultraviolet

KW - high-peak power

KW - pathogenic bacteria

KW - sterilization

UR - http://www.upec2009.org/content/

M3 - Paper

SP - 1

EP - 4

T2 - The 44th International Universities' Power Engineering Conference

Y2 - 1 September 2009 through 4 September 2009

ER -

Pulsed light technology for microbial inactivation

Abstract

Conference

Keywords

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