A food grade lantibiotic from streptococcus macedonicus and...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/315 (2006.01) A01N 63/02 (2006.01) A23B 4/20 (2006.01) A23B 4/22 (2006.01) A23B 7/154 (2006.01) A23B 7/155 (2006.01) A23C 9/123 (2006.01) A23C 19/032 (2006.01) A23C 19/11 (2006.01) A23L 3/3463 (2006.01) A23L 3/3571 (2006.01) A61K 38/16 (2006.01) C12N 1/20 (2006.01)

Patent

CA 2467114

The invention relates to the field of bacteriocin producing microorganisms. The invention more specific relates to the characterization of a novel food grade bacteriocin, namely a lantibiotic, named macedocin and produced by Streptococcus macedonicus ACA-DC 198. Macedocin inhibits a broad spectrum of lactic acid bacteria as well as several food spoilage and pathogenic bacteria, among others Clostridium tyrobutyricum, and is heat stable and active in a broad pH range. The invention further relates to the use of non pathogenic microorganisms for producing macedocin in food fermentation processes, such as for preparing milk products, butter, cheese and fermented meat and vegetables, as well as in non-fermented food products such as raw meat, modified- atmosphere-packed meat products, ready-to-eat meals, and canned food products, and its use for the preparation of functional starter cultures and cocultures.

L'invention concerne le domaine des micro-organismes produisant la bactériocine et, plus particulièrement, la caractérisation d'une nouvelle bactériocine de qualité alimentaire, notamment un lantibiotique appelé macédocine et produit par le Streptococcus macedonicus ACA-DC 198. La macédocine inhibe un large spectre de la bactérie d'acide lactique tout comme de plusieurs bactéries d'altération alimentaire et pathogènes, notamment le Clostridium tyrobutyricum. De plus, La macédocine est thermostable et active dans une large plage de pH. L'invention concerne également l'utilisation de micro-organismes pathogènes pour la production de macédocine dans les procédures de fermentation d'aliments, telles que pour la préparation de produits laitiers, de beurre, de fromage et de viande et de légumes fermentés tout comme dans des produits alimentaires non fermentés tels que la viande crue, les produits de viande conditionnés sous atmosphère modifiée, les plats prêts à consommer et les produits alimentaires en boîtes. L'invention concerne enfin l'utilisation de ce lantibiotique dans la préparation de cultures de départ fonctionnelles et de cocultures.

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