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RESEARCH PAPER
Validation of direct plating of a stool sample as a method for Listeria monocytogenes detection
1
Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
2
Department of Food and Consumer Articles Research, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
Corresponding author
Grzegorz Madajczak
Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
Ann Agric Environ Med. 2012;19(1):69-74
KEYWORDS
ABSTRACT
The aim of current studies was to validate the direct plating of a stool sample for Listeria monocytogenes detection, using selective medium Palcam agar with Palcam selective supplement. Validation was performed using stool samples collected from healthy humans inoculated with Listeria sp. strains. Stool samples were frozen to determine the influence of freezing on method robustness. The presented research defines the Listeria monocytogenes limit of detection (LOD) as 103cfu/g of stools for fresh and frozen samples. Repeatability and reproducibility of the method has been confirmed using statistical methods. We show the effectiveness of direct plating of stool samples on Palcam agar with Palcam selective supplement collected for Listeria monocytogenes detection. This method could be useful for this pathogen detection in stool samples collected from patients with diarrhoea.
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| eISSN: | 1898-2263 |
| ISSN: | 1232-1966 |
Generation of the DOI (Digital Object Identifier) - task financed under the agreement No NrRCN/SP/0532/2021/1 by the Minister of Science and Higher
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