Method for reducing the content of pathogenic organisms...

A - Human Necessities – 23 – B

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A23B 4/12 (2006.01) A23L 1/03 (2006.01) A23L 1/314 (2006.01) A23L 3/3463 (2006.01)

Patent

CA 2563008

The present invention relates to a method for reducing the concentration of pathogenic organisms such as Listeria spp. in fermented food products. The method comprises the steps of: (i) providing a food material, (ii) mixing said food material with a starter culture, (iii) mixing the food material with at least one adjunct culture in form of a bacteriocin-producing Pediococcus species, (iv) subjecting the mixture provided in step (iii) to a fermentation process, said fermentation process being con-ducted at conditions that are sub-optimal for growth of the bacteriocin-producing Pediococcus spe- cies in order to provide a limited acidification and allow for a high production of bacteriocin, and obtain a fermented food product. Furthermore, the invention relates to the use of bacteriocin-producing Pediococcus species as an adjunct culture for securing microbial safety of fermented food products.

L'invention concerne un procédé servant à limiter la concentration d'organismes pathogènes, tels que Listeria spp. dans des produits alimentaires fermentés. Ce procédé consiste à: (i) mettre en application un produit alimentaire, (ii) mélanger ledit produit alimentaire à une culture de départ, (iii) mélanger le produit alimentaire à au moins une culture d'apport sous forme d'espèces Pediococcus produisant des bactériocines, (iv) soumettre le mélange de l'étape (iii) à un processus de fermentation, ledit processus étant exécuté dans des conditions sous-optima pour la croissance de l'espèce Pediococcus produisant les bactériocines, de manière à exercer une acidification limitée et à permettre une production importante de bactériocines, puis à obtenir un produit alimentaire fermenté. Elle concerne, de plus, l'utilisation d'espèces Pediococcus produisant des bactériocines sous forme de culture d'apport afin d'assurer la sécurité microbienne des produits alimentaires fermentés.

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