Reduction of bacterial pathogens on fresh food items

A - Human Necessities – 23 – L

Patent

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Details

A23L 3/34 (2006.01) A01N 37/36 (2006.01) A23B 7/022 (2006.01) A23B 7/10 (2006.01) A23B 7/154 (2006.01) A23B 7/157 (2006.01) A23L 3/3508 (2006.01) A23L 3/358 (2006.01)

Patent

CA 2322301

Methods and compositions for treating uncooked food items, such as produce, so as to reduce viable bacteria, especially enteropathogenic bacteria, on the surfaces of produce and other uncooked food products. Use of a solution containing lactic acid and at least one of hydrogen peroxide, sodium benzoate or glycerol monolaurate, in contact with the food item for 5 sec to 30 min. effectively reduces certain foodborne pathogens, especially Escherichia coli O157:H7. The figure is a flowchart for the fresh fruit model experiment in which known populations of E. coli O157:H7 were applied to apples and oranges and treated with certain washing steps, followed by determination of the bacterial cell counts.

La présente invention concerne des procédés et compositions permettant de traiter des produits alimentaires crus, et notamment des fruits et légumes frais, de façon à réduire les colonies bactériennes, et notamment les bactéries entéropathogènes, vivant sur la surface des fruits et légumes frais et autres produits alimentaires crus. On utilise à cet effet une solution contenant d'une part de l'acide lactique et d'autre part l'un au moins des agents que sont le peroxyde d'hydrogène, le benzoate de sodium ou le glycérol monolaurate, et l'on maintient cette solution en contact avec le produit alimentaire de 5 secondes à 30 minutes. Cela permet de réduire les colonies de pathogènes d'origine alimentaire, en particulier Escherichia coli O157:H7. La figure représente un organigramme expérimental pour un modèle de fruit frais où des populations connues d'E. coli O157:H7 ont été appliquées sur des pommes et des oranges, après quoi est intervenu un traitement comportant certaines opérations de lavage, suivi d'une numération bactérienne.

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