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Int J Food Microbiol. 1995 Jul;26(2):187-97.

Identification of Enterococcus species isolated from foods of animal origin.

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Faculty of Veterinary Medicine, University of Gent, Belgium.


Enterococci isolated from a large variety of fresh and prepared foods of animal origin during routine microbiologic control tests in a distribution firm, were identified to species level using API 20 STREP galleries supplemented with conventional tests, rapid ID32 STREP galleries and SDS-PAGE analysis. API 20 STREP tests correctly identified 77% of the strains, mainly Enterococcus faecium and E. faecalis. A simple presumptive identification scheme based on pigmentation, tetrazolium reduction and acid production from mannitol and raffinose identified 90% of the strains. More complex procedures were necessary to identify the remaining strains. Nearly all strains isolated from hard cheeses and prepared cheese-meat combinations were identified as E. faecium while E. faecalis was the most frequent species in crustaceans. In meat and in prepared meat products E. faecium, E. faecalis and less frequently E. hirae/E. durans were found. Three of four E. gallinarum strains were isolated from products containing turkey meat.

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