Bifidobacteria as indicators of fecal contamination along a sheep meat production chain - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Article Dans Une Revue Journal of Applied Microbiology Année : 2008

Bifidobacteria as indicators of fecal contamination along a sheep meat production chain

Résumé

Aims: The potential use of bifidobacteria as indicators for faecal contamination was studied along a sheep meat production and processing chain. The levels of bifidobacteria were compared with those of Escherichia coli. Total viable counts were followed along the chain (244 samples). Methods and Results: Forty-three per cent of the samples contained bifidobacteria, of which 15% were solely detected using a PCR method based on the hsp60 gene and not by a culture-based method. Bifidobacteria were detected in only three of nine sheep faeces samples using one or the other method. However, carcasses (types C and E) were highly contaminated. These sample types (30% and 28%, respectively) were positive for bifidobacteria and negative for E. coli. The species Bifidobacterium pseudolongum and Bif. thermophilum, isolated from faecal samples, were predominant. Bifidobacterium choerinum were found in C, D, E and F sample types. Conclusions: Bifidobacteria were shown more efficient than E. coli in carcasses samples. The presence of Bif. choerinum suggested a faecal pork contamination.
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Dates et versions

hal-02665510 , version 1 (31-05-2020)

Identifiants

  • HAL Id : hal-02665510 , version 1
  • PRODINRA : 185238
  • WOS : 000251670600029

Citer

V. Delcenserie, D. Loncaric, C. Bonaparte, M. Upmann, B. China, et al.. Bifidobacteria as indicators of fecal contamination along a sheep meat production chain. Journal of Applied Microbiology, 2008, 104 (1), pp.276-284. ⟨hal-02665510⟩

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