Food disinfection using ozone

A - Human Necessities – 23 – B

Patent

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Details

A23B 4/24 (2006.01) A23B 4/16 (2006.01) A23B 4/26 (2006.01) A23L 3/3409 (2006.01) A23L 3/3418 (2006.01) A23L 3/358 (2006.01) A23L 3/3589 (2006.01)

Patent

CA 2398332

Methods and apparatus are provided for decreasing the bacteria count of a food commodity eg. meat without affecting its overall organoleptic quality (taste, odor, and color). This is accomplished using a treatment fluid comprising ozone, which is injected into a treatment chamber containing the food commodity. Some water is preferably added to obtain better contact of the ozone with the food by forming a thin film of ozonated water on the food surface. Spices and/or other ingredients may preferably be added with the water. The food is placed in a tumbler and the tumbler is set in motion. During treatment good contact between the treatment fluid and the food commodity is obtained by reversibly oscillating the tumbler. A log reduction of 40 % or more in bacteria count may be obtained as compared without the ozone.

L'invention concerne des procédés et appareils permettant de réduire la numération bactérienne d'une denrée alimentaire sans en affecter la qualité organoleptique générale (goût, odeur et couleur). Pour ce faire, on utilise un fluide de traitement comprenant de l'ozone, que l'on injecte dans la chambre de traitement renfermant la denrée alimentaire. Pour obtenir un meilleur contact entre l'ozone et le produit alimentaire, on ajoute, de préférence, de l'eau de manière à former une fine couche d'eau ozonée à la surface des aliments. De préférence, on peut également ajouter à l'eau des épices et/ou autres ingrédients. Le produit alimentaire est placé dans un cylindre tournant, que l'on met en mouvement. Pendant le traitement, on obtient un contact satisfaisant entre le fluide de traitement et la denrée alimentaire en faisant osciller de façon réversible ledit cylindre tournant. Par rapport aux techniques n'utilisant pas d'ozone, on peut ainsi obtenir une réduction logarithmique de la numération bactérienne supérieure ou égale à 40 %.

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