Water insoluble chitosan powder and method of limiting brettanomyces yeast in fermented liquids
AssigneeKitozyme S.A.
InventorsAurélie Bornet, Sandrine Gautier, Véronique Maquet, Pierre-Louis Teissedre, Daniels Granes, Lucile Pic-Blateyron
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Abstract
The invention relates to a chitosan as a micronized powder, to its use for controlling certain yeasts, such as Brettanomyces, and to a method for treating a liquid food. The invention in particular relates to a water-insoluble chitosan as a micronized powder, for which the grain size is comprised between 5 and 50 microns, and to its use in the treatment of liquid foods and/or for controlling Brettanomyces.
Claims24
A water-insoluble chitosan in the form of a powder having a grain size comprised between 5 and 50 micrometers (μm), said chitosan comprising a degree of acetylation (DA) comprised between 0 and 30 mol %.
A suspension in a liquid of a water-insoluble chitosan, said chitosan being in the form of a powder having a grain size comprised between 5 and 50 micrometers, and said chitosan comprising a degree of acetylation (DA) comprised between 0 and 30 mol %.
A method for limiting yeasts of the Brettanomyces genus in a fermented liquid food, wherein said method comprises treating said fermented liquid food with an antifungal agent or a composition comprising said antifungal agent, said antifungal agent being a water-insoluble chitosan in the form of a powder having a grain size comprised between 0.1 and 200 micrometers, said chitosan comprising a degree of acetylation (DA) comprised between 0 and 30 mol %, said water-insoluble chitosan being at a concentration from 1 to 10 g/hL of said fermented liquid food to be treated.
A method for controlling undesirable yeasts of the Brettanomyces genus in a fermented liquid food of vegetable origin, wherein said method comprises treating said fermented liquid food with an antifungal agent or a composition comprising said antifungal agent, said antifungal agent being a water-insoluble chitosan in the form of a powder having a grain size comprised between 0.1 and 200 micrometers, said water-insoluble chitosan being at a concentration from 1 to 10 g/hL of said fermented liquid food to be treated.
A method for curative treatment of a fermented liquid food of vegetable origin in which undesirable yeasts of the Brettanomyces genus have to be removed, or the population of undesirable yeasts of the Brettanomyces genus has to be limited, said method comprising putting fermented liquid food in the presence with a water-insoluble chitosan or a composition comprising said chitosan, said chitosan being in the form of a powder having a grain size comprised between 0.1 and 200 micrometers, said chitosan being at a concentration from 1 to 10 g/hL of fermented liquid food to be treated.
Dependencies are inferred from the claim text.