Identification of bacteriocin genes in enterococci isolated from game animals and saltwater fish

  1. Almeida, T. 22
  2. Brandaão, A. 22
  3. Muñoz-Atienza, E. 3
  4. Gonçalves, A. 22
  5. Torres, C. 1
  6. Igrejas, G. 22
  7. Hernández, P.E. 3
  8. Herranz, C. 3
  9. Cintas, L.M. 3
  10. Poeta, P. 22
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidade de Trás-os-Montes e Alto Douro
    info

    Universidade de Trás-os-Montes e Alto Douro

    Vila Real, Portugal

    ROR https://ror.org/03qc8vh97

  3. 3 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

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Revista:
Journal of Food Protection.

ISSN: 0362-028X

Año de publicación: 2011

Volumen: 74

Número: 8

Páginas: 1252-1260

Tipo: Artículo

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DOI: 10.4315/0362-028X.JFP-11-016 PMID: 21819651 SCOPUS: 2-s2.0-80051595929 WoS: WOS:000293607700005 GOOGLE SCHOLAR

Otras publicaciones en: Journal of Food Protection.

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Resumen

Bacteriocins produced by enterococci, referred to as enterocins, possess great interest for their potential use as biopreservatives in food and feed, as well as alternative antimicrobials in humans and animals. In this context, the aim of the present study was to determine the antimicrobial activity and the presence of bacteriocin structural genes in fecal enterococcal isolates from animal origins. Evaluation of the direct antimicrobial activity of 253 isolates from wild boars (Sus scrofa, n = 69), mullets (Liza ramada, n = 117), and partridges (Perdix perdix, n = 67) against eight indicator bacterial strains (including Listeria monocytogenes, Pediococcus pentosaceus, and Enterococcus spp.) showed that 177 (70%) exerted antimicrobial activity against at least one indicator microorganism. From these isolates, 123 were further selected on the basis of their inhibition group, and 81 were found to be producers of bacteriocins active against Listeria monocytogenes. Analysis of the presence of enterocin structural genes in a subset of 36 isolates showed that 70% harbored one or more of the evaluated genes, those of enterocin P and hiracin JM79 being the most prevalent. These results show that wild animals constitute an appropriate source for the isolation of bacteriocinogenic enterococci. © International Association for Food Protection.