Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment

Gulten Izmirlioglu, Ali Demirci

Research output: Contribution to conferencePaper

Abstract

Pulsed UV light is a novel technology that is employed to eliminate the microorganisms on food sources. The overall aim of this study was to investigate the effectiveness of pulsed UV light on Salmonella Enteritidis on shelled walnuts. Shelled walnut halves and pieces were inoculated with Salmonella Enteritidis and treated in a pulsed UV light system chamber at three different distances from the quartz window (5, 8, and 13 cm) for different times (1 s-45 s). A maximum log reduction of 3.18 was obtained after pulsed UV treatment at 8 cm for 45 seconds. Further investigations on the energy and temperature changes of the nuts were also evaluated. Measurement of energy levels revealed an increase in energy with longer treatment time and shorter distance from the UV lamp as it was also true for the change in temperature. The results of this study clearly indicate that pulsed UV light technology is a promising method to decontaminate pathogenic microorganisms from walnuts.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 2018
EventASABE 2018 Annual International Meeting - Detroit, United States
Duration: Jul 29 2018Aug 1 2018

Other

OtherASABE 2018 Annual International Meeting
CountryUnited States
CityDetroit
Period7/29/188/1/18

Fingerprint

Salmonella
walnuts
Salmonella Enteritidis
Ultraviolet radiation
ultraviolet radiation
inactivation
Microorganisms
energy
Ultraviolet lamps
microorganisms
Quartz
quartz
Electron energy levels
temperature
Temperature
methodology

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Agronomy and Crop Science

Cite this

Izmirlioglu, G., & Demirci, A. (2018). Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment. Paper presented at ASABE 2018 Annual International Meeting, Detroit, United States. https://doi.org/10.13031/aim.201800334
Izmirlioglu, Gulten ; Demirci, Ali. / Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment. Paper presented at ASABE 2018 Annual International Meeting, Detroit, United States.
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Izmirlioglu, G & Demirci, A 2018, 'Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment', Paper presented at ASABE 2018 Annual International Meeting, Detroit, United States, 7/29/18 - 8/1/18. https://doi.org/10.13031/aim.201800334

Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment. / Izmirlioglu, Gulten; Demirci, Ali.

2018. Paper presented at ASABE 2018 Annual International Meeting, Detroit, United States.

Research output: Contribution to conferencePaper

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AB - Pulsed UV light is a novel technology that is employed to eliminate the microorganisms on food sources. The overall aim of this study was to investigate the effectiveness of pulsed UV light on Salmonella Enteritidis on shelled walnuts. Shelled walnut halves and pieces were inoculated with Salmonella Enteritidis and treated in a pulsed UV light system chamber at three different distances from the quartz window (5, 8, and 13 cm) for different times (1 s-45 s). A maximum log reduction of 3.18 was obtained after pulsed UV treatment at 8 cm for 45 seconds. Further investigations on the energy and temperature changes of the nuts were also evaluated. Measurement of energy levels revealed an increase in energy with longer treatment time and shorter distance from the UV lamp as it was also true for the change in temperature. The results of this study clearly indicate that pulsed UV light technology is a promising method to decontaminate pathogenic microorganisms from walnuts.

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Izmirlioglu G, Demirci A. Inactivation of Salmonella Enteritidis on walnuts by pulsed UV treatment. 2018. Paper presented at ASABE 2018 Annual International Meeting, Detroit, United States. https://doi.org/10.13031/aim.201800334