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Microbiological composition of raw milk from selected farms in the Camembert region of Normandy.

Abstract : Raw milk from 27 farms was sampled over 6 months for listerias, salmonellas, Yersinia enterocolitica and campylobacters. Total bacterial counts and somatic cell counts were measured. Lactococci, lactobacilli, dextran-producing leuconostocs, Brevibacterium linens, yeasts and moulds, Staphylococcus aureus and other Micrococcaceae, Pseudomonas, coliforms, Escherichia coli, enterococci, Clostridium perfringens and spores of anaerobic lactate-fermenting bacteria were also counted. Pseudomonas (2000 cfu ml-1), lactococci (760 cfu ml-1) and Micrococcaceae (720 cfu ml-1) were the most numerous groups. Lactic acid bacteria were detected in all samples. Coliforms were present in most samples, but 84% of samples had counts < 100 cfu ml-1. Staphylococcus aureus was detected in 62% of milks, the average count was 410 cfu ml-1. About 80% of supplies had < or = 10 E. coli cfu ml-1 and all samples had < or = 1 Cl. perfringens cfu ml-1. Two of the tested milks were positive for salmonellas (2.9%), four were positive for Listeria monocytogenes (5.8%), 25 for Yersinia enterocolitica (36%) and one for campylobacters (1.4%).
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https://hal-normandie-univ.archives-ouvertes.fr/hal-02087682
Contributor : Nathalie Desmasures <>
Submitted on : Tuesday, April 2, 2019 - 11:57:08 AM
Last modification on : Thursday, November 26, 2020 - 5:02:03 PM

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Nathalie Desmasures, Fabienne Bazin, Micheline Gueguen. Microbiological composition of raw milk from selected farms in the Camembert region of Normandy.. Journal of Applied Microbiology, Wiley, 1997, 83 (1), pp.53-58. ⟨10.1046/j.1365-2672.1997.00166.x⟩. ⟨hal-02087682⟩

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