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Nonthermal sterilization of Listeria monocytogenes in infant foods by intense pulsed-light treatment

Title
Nonthermal sterilization of Listeria monocytogenes in infant foods by intense pulsed-light treatment
Authors
Choi M.-S.Cheigh C.-I.Jeong E.-A.Shin J.-K.Chung M.-S.
Ewha Authors
정명수
SCOPUS Author ID
정명수scopus
Issue Date
2010
Journal Title
Journal of Food Engineering
ISSN
0260-8774JCR Link
Citation
vol. 97, no. 4, pp. 504 - 509
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The purposes of this study were to determine the inactivation effects of intense pulsed light (IPL) on Listeria monocytogenes and the commercial feasibility of this sterilization method. The inactivation of L. monocytogenes at cultivated plates increased with increasing electric power and treatment time. Approximately 4-5 log reduction of the cell was achieved with IPL treatment for 5000, 600, 300, and 100 μs at 10, 15, 20, and 25 kV of voltage pulse, respectively. In the early stages of IPL treatments at 10, 15, and 20 kV, little inactivation was observed with a critical treatment time (tc) of 360.6, 95.5, and 32.2 μs, respectively, while an abrupt inactivation without a critical treatment time was observed at 25 kV. The sterilization effects on commercial infant foods inoculated with L. monocytogenes were investigated at 15 kV, which showed higher energy efficiency for the inactivation of L. monocytogenes. © 2009 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.jfoodeng.2009.11.008
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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