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Foods 2015, 4(3), 271-282; doi:10.3390/foods4030271

Occurrence of Listeria monocytogenes in Ready-to-Eat Meat Products and Meat Processing Plants in Spain

1
Department of Animal Production and Food Science, Veterinary Faculty, University of Zaragoza, c/Miguel Servet 177, Zaragoza 50013, Spain
2
Agrifood Research and Technology Centre of Aragón (CITA), Avda. Montañana 930, Zaragoza 50059, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Jim Dickson
Received: 29 May 2015 / Revised: 6 July 2015 / Accepted: 8 July 2015 / Published: 14 July 2015
(This article belongs to the Special Issue Microbiology Safety of Meat Products)
View Full-Text   |   Download PDF [380 KB, uploaded 14 July 2015]

Abstract

The aim of this work was to study the occurrence of Listeria monocytogenes in several types of ready-to-eat (RTE) meat products and in the environment of meat processing plants. A total of 129 samples of RTE meat products and 110 samples from work surfaces and equipment were analyzed. L. monocytogenes was detected in 6 out of 35 cooked products (17.14%), 21 out of 57 raw-cured products (36.84%), and 9 out of 37 dry-cured, salted products (24.32%). The number of sample units that exceeded the food safety limit of 100 cfu/g decreased from the manufacture date to half shelf life, and then it was further reduced at the end of shelf life. L. monocytogenes was detected in 25 out of 110 (22.72%) food contact surfaces. The number of positive and negative results from both food and environmental samples were cross-tabulated and the calculated Cohen’s kappa coefficient (κ) was 0.3233, indicating a fair agreement in terms of Listeria contamination. L. monocytogenes was recovered after cleaning and disinfection procedures in four plants, highlighting the importance of thorough cleaning and disinfection. View Full-Text
Keywords: Listeria monocytogenes; occurrence; ready-to-eat meat products; work surfaces; meat processing plant Listeria monocytogenes; occurrence; ready-to-eat meat products; work surfaces; meat processing plant
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

Gómez, D.; Iguácel, L.P.; Rota, M.C.; Carramiñana, J.J.; Ariño, A.; Yangüela, J. Occurrence of Listeria monocytogenes in Ready-to-Eat Meat Products and Meat Processing Plants in Spain. Foods 2015, 4, 271-282.

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