Quantitative Exposure Assessment of Listeria monocytogenes in Chilled Pork

doi:10.7506/spkx1002-6630-201611014

Abstract

Abstract:

Objective: To establish an exposure assessment model of Listeria monocytogenes in chilled pork. Methods: In the
present study, we obtained the data of L. monocytogenes initial contamination level in chilled pork from our previous survey.
The mathematical models established in our previous work were employed to fit the growth kinetics of L. monocytogenes
in chilled pork. The @Risk software was applied to simulate L. monocytogenes level in chilled pork from retail to home.
Results: One point two percent of chilled pork contained more than 4 (lg(CFU/g)) L. monocytogenes (risk threshold), and
the maximum value reached 6.29 (lg(CFU/g)), implying that the potential risk should not be ignored. Sensitivity analysis
indicated that initial contamination level was the main risk control factor with correlation coefficient of 0.90, followed by
home storage time and storage temperature with correlation coefficient of 0.34 and 0.21, respectively. Conclusion: This
study could provide references for consumers and stakeholders to take measures for risk management.

Key words: chilled pork, Listeria monocytogenes, exposure assessment

CLC Number:

TS251.1

WANG Kai, YE Keping, BAI Hongwu, ZHOU Guanghong. Quantitative Exposure Assessment of Listeria monocytogenes in Chilled Pork[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201611014.

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Quantitative Exposure Assessment of Listeria monocytogenes in Chilled Pork

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