Comparative Study
doi: 10.1016/0168-1605(91)90053-r.
A comparative study of the 'FDA' and 'USDA' methods for the detection of Listeria monocytogenes in foods
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- PMID: 1909544
- DOI: 10.1016/0168-1605(91)90053-r
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Comparative Study
A comparative study of the 'FDA' and 'USDA' methods for the detection of Listeria monocytogenes in foods
Int J Food Microbiol.
1991 Jun.
Abstract
Nineteen laboratories across Canada took part in a comparative study of the 'FDA' and 'USDA' methods for the detection of Listeria monocytogenes in foods and environmental samples. The results show that the enrichment period of the FDA method can be shortened from 7 to 2 days without substantially reducing the number of positive samples. With a limited number of samples, the USDA method proved to be slightly more efficient in isolating L. monocytogenes than the FDA method. Fraser broth, in principle, proved to be useful as a screening tool but is not very selective. Oxford agar and lithium chloride-phenylethanol-moxalactam medium were better than modified McBride's agar in isolating this microorganism.
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