Microbial contamination after sanitation of food contact surfaces in dairy and meat processing plants
| Autor: | M. Holasová, L. Konstantinová, P. Roubal, Jarmila Schlegelová, F. Šišák, Vladimir Babak, L. Necidová, H. Vlkova, Z. Jaglic |
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| Rok vydání: | 2010 |
| Předmět: |
0301 basic medicine
Salmonella biology Meat packing industry business.industry 030106 microbiology Bacillus cereus Contamination biology.organism_classification medicine.disease_cause Food safety Microbiology 03 medical and health sciences Listeria monocytogenes medicine Food science business Dairy cattle Food Science Food contaminant |
| Zdroj: | Czech Journal of Food Sciences. 28:450-461 |
| ISSN: | 1805-9317 1212-1800 2005-2006 |
| Popis: | The occurrence of Listeria monocytogenes, Salmonella spp., Bacillus cereus, Staphylococcus spp., Enterococcus spp., and Escherichia coli in raw food materials, food products, and on food contact surfaces after sanitation was investigated during the period of 2005-2006 in three dairy cattle farms (120 samples), one dairy (124 samples), and two meat processing plants (160 samples). A total of 1409 isolates were identified. The epidemiological characterisation and determination of the virulence factors and antimicrobial resistance were performed on selected isolates. The level of bacterial contamination generally decreased during the production process (the contamination of food products was lower than that of raw material). However, the contamination of food contact surfaces was relatively high even after sanitation. Moreover, specific microbiological profiles were found on the inside equipment surfaces in dairy facilities, where genetically closely related multi-resistant strains persisting in biofilm communities may occur as demonstrated for staphylococci. Although the occurrence of potentially significant pathogens was not high, the microorganisms such as L. monocytogenes, Salmonella spp., and shiga-toxin positive E. coli principally contaminated the meat processing plants. B. cereus isolates, among which 76% were positive for diarrhogenic enterotoxin, typically occurred on the inside equipment surfaces and in the heat-treated products. |
| Databáze: | OpenAIRE |
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