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Agriculture 2015, 5(2), 231-244; doi:10.3390/agriculture5020231

Evaluation of Single or Double Hurdle Sanitizer Applications in Simulated Field or Packing Shed Operations for Cantaloupes Contaminated with Listeria monocytogenes

Center for Food Safety, Department of Food Science and Technology, 1109 Experiment Street, University of Georgia, Griffin, GA 30223, USA
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Author to whom correspondence should be addressed.
Academic Editor: Pascal Delaquis
Received: 15 February 2015 / Revised: 1 April 2015 / Accepted: 21 April 2015 / Published: 28 April 2015
View Full-Text   |   Download PDF [210 KB, uploaded 28 April 2015]

Abstract

Listeria monocytogenes contamination of cantaloupes has become a serious concern as contaminated cantaloupes led to a deadly outbreak in the United States in 2011. To reduce cross-contamination between cantaloupes and to reduce resident populations on contaminated melons, application of sanitizers in packing shed wash water is recommended. The sanitizing agent of 5% levulinic acid and 2% sodium dodecyl sulfate (SDS) applied as a single hurdle in either a simulated dump or dip treatment significantly reduced L. monocytogenes to lower levels at the stem scar compared to a simulated dump treatment employing 200 ppm chlorine; however pathogen reductions on the rind tissue were not significantly different. Double hurdle approaches employing two sequential packing plant treatments with different sanitizers revealed decreased reduction of L. monocytogenes at the stem scar. In contrast, application of sanitizers both in the field and at the packing plant led to greater L. monocytogenes population reductions than if sanitizers were only applied at the packing plant. View Full-Text
Keywords: levulinic acid; sodium dodecyl sulfate; cantaloupes; stem scar; Listeria monocytogenes levulinic acid; sodium dodecyl sulfate; cantaloupes; stem scar; Listeria monocytogenes
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Webb, C.C.; Erickson, M.C.; Davey, L.E.; Doyle, M.P. Evaluation of Single or Double Hurdle Sanitizer Applications in Simulated Field or Packing Shed Operations for Cantaloupes Contaminated with Listeria monocytogenes. Agriculture 2015, 5, 231-244.

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