Inactivation of campylobacter species using pulsed light

Y. Lamont, T. Wang, S.J. MacGregor, J.G. Anderson, N.J. Rowan

Research output: Contribution to conferencePaper

Abstract

The growing numbers of gastroenteritis cases reported annually throughout the world indicates clearly that food and water-borne microorganisms continue to pose a major threat to public health. In developed countries, Campylobacter species account for most of the bacterial cases associated with gastro-intestinal illness. Therefore methods which can reduce or eliminate these problematic organisms are therefore of high importance and warrant investigation. The use of ultraviolet light is becoming an increasingly popular method for reducing the microbial loads on surfaces, packaging, water and air. However, the applicability of traditional UV delivery systems is limited due to long exposure times required with such low intensity emissions. Treatment with pulsed ultraviolet light (PUV), overcomes this problem by emitting highly intense light pulses, and these achieve high levels of microbial inactivation within short timescales. Experiments using different Campylobacter strains have shown that these bacteria are highly sensitive to PUV exposure. Treatment with as few as 5 light pulses has been shown to reduce microbial numbers by ~ 8 log10. Similar inactivation experiments with Escherichia coli and Salmonella enteritidis resulted in 5 and
6 log10 reductions respectively. The latter results highlight the comparative sensitivity of Campylobacter spp to PUV treatment

Conference

ConferenceSociety for General Microbiology – 152nd Meeting – –
CityUniversity of Edinburgh
Period7/04/0311/04/03

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gastroenteritis
public health
experiment
microorganism
timescale
water
bacterium
food
air
method
exposure
packaging
world
developed country
salmonella
organism

Keywords

  • inactivation
  • campylobacter species
  • pulsed light
  • gastroenteritis
  • worldwide
  • public health
  • threat
  • gastro-intestinal illness
  • food and water-borne microorganisms
  • ultraviolet light
  • PUV exposure
  • PUV treatment

Cite this

Lamont, Y., Wang, T., MacGregor, S. J., Anderson, J. G., & Rowan, N. J. (2003). Inactivation of campylobacter species using pulsed light. Paper presented at Society for General Microbiology – 152nd Meeting – –, University of Edinburgh, .
Lamont, Y. ; Wang, T. ; MacGregor, S.J. ; Anderson, J.G. ; Rowan, N.J. / Inactivation of campylobacter species using pulsed light. Paper presented at Society for General Microbiology – 152nd Meeting – –, University of Edinburgh, .
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abstract = "The growing numbers of gastroenteritis cases reported annually throughout the world indicates clearly that food and water-borne microorganisms continue to pose a major threat to public health. In developed countries, Campylobacter species account for most of the bacterial cases associated with gastro-intestinal illness. Therefore methods which can reduce or eliminate these problematic organisms are therefore of high importance and warrant investigation. The use of ultraviolet light is becoming an increasingly popular method for reducing the microbial loads on surfaces, packaging, water and air. However, the applicability of traditional UV delivery systems is limited due to long exposure times required with such low intensity emissions. Treatment with pulsed ultraviolet light (PUV), overcomes this problem by emitting highly intense light pulses, and these achieve high levels of microbial inactivation within short timescales. Experiments using different Campylobacter strains have shown that these bacteria are highly sensitive to PUV exposure. Treatment with as few as 5 light pulses has been shown to reduce microbial numbers by ~ 8 log10. Similar inactivation experiments with Escherichia coli and Salmonella enteritidis resulted in 5 and6 log10 reductions respectively. The latter results highlight the comparative sensitivity of Campylobacter spp to PUV treatment",
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author = "Y. Lamont and T. Wang and S.J. MacGregor and J.G. Anderson and N.J. Rowan",
note = "Paper number FdBev 03, 2003.; Society for General Microbiology – 152nd Meeting – – ; Conference date: 07-04-2003 Through 11-04-2003",
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Lamont, Y, Wang, T, MacGregor, SJ, Anderson, JG & Rowan, NJ 2003, 'Inactivation of campylobacter species using pulsed light' Paper presented at Society for General Microbiology – 152nd Meeting – –, University of Edinburgh, 7/04/03 - 11/04/03, .

Inactivation of campylobacter species using pulsed light. / Lamont, Y.; Wang, T.; MacGregor, S.J.; Anderson, J.G.; Rowan, N.J.

2003. Paper presented at Society for General Microbiology – 152nd Meeting – –, University of Edinburgh, .

Research output: Contribution to conferencePaper

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T1 - Inactivation of campylobacter species using pulsed light

AU - Lamont, Y.

AU - Wang, T.

AU - MacGregor, S.J.

AU - Anderson, J.G.

AU - Rowan, N.J.

N1 - Paper number FdBev 03, 2003.

PY - 2003

Y1 - 2003

N2 - The growing numbers of gastroenteritis cases reported annually throughout the world indicates clearly that food and water-borne microorganisms continue to pose a major threat to public health. In developed countries, Campylobacter species account for most of the bacterial cases associated with gastro-intestinal illness. Therefore methods which can reduce or eliminate these problematic organisms are therefore of high importance and warrant investigation. The use of ultraviolet light is becoming an increasingly popular method for reducing the microbial loads on surfaces, packaging, water and air. However, the applicability of traditional UV delivery systems is limited due to long exposure times required with such low intensity emissions. Treatment with pulsed ultraviolet light (PUV), overcomes this problem by emitting highly intense light pulses, and these achieve high levels of microbial inactivation within short timescales. Experiments using different Campylobacter strains have shown that these bacteria are highly sensitive to PUV exposure. Treatment with as few as 5 light pulses has been shown to reduce microbial numbers by ~ 8 log10. Similar inactivation experiments with Escherichia coli and Salmonella enteritidis resulted in 5 and6 log10 reductions respectively. The latter results highlight the comparative sensitivity of Campylobacter spp to PUV treatment

AB - The growing numbers of gastroenteritis cases reported annually throughout the world indicates clearly that food and water-borne microorganisms continue to pose a major threat to public health. In developed countries, Campylobacter species account for most of the bacterial cases associated with gastro-intestinal illness. Therefore methods which can reduce or eliminate these problematic organisms are therefore of high importance and warrant investigation. The use of ultraviolet light is becoming an increasingly popular method for reducing the microbial loads on surfaces, packaging, water and air. However, the applicability of traditional UV delivery systems is limited due to long exposure times required with such low intensity emissions. Treatment with pulsed ultraviolet light (PUV), overcomes this problem by emitting highly intense light pulses, and these achieve high levels of microbial inactivation within short timescales. Experiments using different Campylobacter strains have shown that these bacteria are highly sensitive to PUV exposure. Treatment with as few as 5 light pulses has been shown to reduce microbial numbers by ~ 8 log10. Similar inactivation experiments with Escherichia coli and Salmonella enteritidis resulted in 5 and6 log10 reductions respectively. The latter results highlight the comparative sensitivity of Campylobacter spp to PUV treatment

KW - inactivation

KW - campylobacter species

KW - pulsed light

KW - gastroenteritis

KW - worldwide

KW - public health

KW - threat

KW - gastro-intestinal illness

KW - food and water-borne microorganisms

KW - ultraviolet light

KW - PUV exposure

KW - PUV treatment

UR - http://www.sgm.ac.uk/

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M3 - Paper

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Lamont Y, Wang T, MacGregor SJ, Anderson JG, Rowan NJ. Inactivation of campylobacter species using pulsed light. 2003. Paper presented at Society for General Microbiology – 152nd Meeting – –, University of Edinburgh, .