Simulation of decontamination and transmission of Escherichia coli O157:H7, Salmonella Enteritidis, and Listeria monocytogenes during handling of raw vegetables in domestic kitchens

Chee Hao Kuan, Leonard Whye Kit Lim, Tai Wei Ting, Yaya Rukayadi, Siti Hajar Ahmad, Che Wan Jasimah Wan Mohamed Radzi, Tze Young Thung, Othman Bahumaish Ramzi, Wei San Chang, Yuet Ying Loo, Chee Sian Kuan, Siok Koon Yeo, Son Radu

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11 Citations (Scopus)

Abstract

Epidemiological data indicates that a large number of foodborne illnesses are attributed to cross-contamination during food preparation in the domestic kitchen. The objectives of this study were to evaluate the efficiency of household washing practices in removing Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella Enteritidis on artificially contaminated lettuce and to determine the transfer rate of these three foodborne pathogens from contaminated lettuce to wash water, tomato, cabbage, and cutting boards during washing and cutting processes. Washing under the running tap water with scrubbing for 60 s was the most effective method in reducing pathogen populations by 1.86–2.60 log10 CFU/g. Also, final rinsing and scrubbing practices were found to enhance the efficiency of washing treatment. In this study, the transfer rates of S. Enteritidis, E. coli O157:H7, and L. monocytogenes from cutting board to cabbage and tomato via cutting process (17.5–31.7%) were higher (P < 0.05) than from wash water to cabbage and tomato (0.8–23.0%) during washing treatment. Overall, our findings suggest that wash water and cutting board can be potential vehicles in the dissemination of foodborne pathogens. Therefore, there is a need to promote consumer awareness for proper handling practices in the kitchen to minimise the risk of foodborne infection.

Original languageEnglish
Pages (from-to)395-400
Number of pages6
JournalFood Control
Volume80
DOIs
Publication statusPublished - Oct 2017
Externally publishedYes

Keywords

  • Cross-contamination
  • Cutting board
  • Foodborne pathogens
  • Raw vegetable
  • Vegetable washing practices

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