Peroxycarboxylic acid compositions and methods of use...

A - Human Necessities – 01 – N

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A01N 59/00 (2006.01) A01N 33/12 (2006.01) A01N 37/02 (2006.01) A01N 37/04 (2006.01) A01N 37/06 (2006.01) A01N 37/16 (2006.01) A01N 37/36 (2006.01)

Patent

CA 2400625

Compositions having antimicrobial activity against a variety of microorganisms, including vegetative bacteria, bacte-rial spores, fungi, and fungal spores are particularly useful for microbiocidal treatments of a variety of substances. More specifically, compositions have antibmicrobial activity against microorganisms of the Bacillus cereus group such as Bacillus cereus, Bacillus mycoides, Bacillus anthracis, and Bacillus thuringiensis are particularly useful. Compositions including hydrogen peroxide, a car-boxylic acid, and a peroxycarboxylic acid in which the weight ratio of the preroxycarboxylic acid to the hydrogen peroxide is at least 4:1 are effective against microorganims, particularly bacterial spores. Such compositions include a reduced amount of hydro-gen peroxide relative to the amount of peroxycarboxylic acid as compared to conventional compositions. Compositions can also inlclude a quaternary ammonium compound, a stabilizing agent, a surfactant, a hydrotrope, or other additives. Methods of using a composition including hydrogen peroxide, a carboxylic acid, and a peroxycarboxylic acid in which the ratio of the peroxycarboxylic acid to the hydrogen peroxide is at least 4:1 are useful for reducing the microbial numbers on a variety of substances contaminated by microorganisms, particularly of the Bacillus cereusgroup. Such substances include foodstuffs, water, general-premise surfaces, specific-equipment surfaces, animal carcasses, soil, and textiles.

L'invention concerne des compositions possédant une activité antimicrobienne contre une variété de micro-organismes, y compris de bactéries végétatives, de spores bactériennes, de champignons, et de spores de champignons, et qui sont particulièrement utiles pour le traitement d'une variété de substances. Les compositions qui montrent une activité antimicrobienne plus spécifiquement contre des micro-organismes du groupe Bacillus cereus tels que Bacillus cereus, Bacillus mycoides, Bacillus anthracis and Bacillus thuringiensis sont particulièrement utiles. Des compositions qui contiennent du peroxyde d'hydrogène, un acide carboxylique et un acide peroxycarboxylique dans lesquelles le rapport en poids de l'acide peroxycarboxylique et du peroxyde d'hydrogène est au moins de 4:1 sont efficaces contre les micro-organismes en particulier contre des spores bactériennes. Lorsqu'on les compare à des compositions classiques, de telles compositions comportent une quantité réduite de peroxyde d'hydrogène par rapport à l'acide peroxycarboxylique. Les compositions peuvent contenir aussi un composé ammonium quaternaire, un agent stabilisant, un agent tensioactif, un agent hydrotrope, ou d'autres additifs. Des procédés d'utilisation de composition contenant du peroxyde d'hydrogène, un acide carboxylique et un acide peroxycarboxylique dans laquelle le rapport de l'acide peroxycarboxylique et du peroxyde d'hydrogène est au moins de 4:1 sont utiles pour la réduction des énumérations microbiennes sur une variété de substances contaminées par des micro-organismes, en particulier du groupe de Bacillus cereus. De telles substances comprennent des aliments, l'eau, de surfaces de local général, des carcasses d'animaux, des sols et des textiles.

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