Use of chitosan in powder form as antifungal agent in the treatment of food liquids of vegetable origin prepared by fermentation

• Main Authors: GAUTIER, SANDRINE, TEISSEDRE, PIERRE-LOUIS, BORNET, AURELIE, GRANES, DANIELS, PIC-BLATEYRON, LUCILE, MAQUET, VERONIQUE
• Format: Patent
• Language: English; French; German
• Published: 07.05.2014
• Subjects: AGEING; AGRICULTURE; ANIMAL HUSBANDRY; BEER; BIOCHEMISTRY; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES; CHEMISTRY; CLARIFICATION; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DERIVATIVES THEREOF; ENZYMOLOGY; FISHING; FOODS OR FOODSTUFFS; FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J; FORESTRY; HUMAN NECESSITIES; HUNTING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; ORGANIC MACROMOLECULAR COMPOUNDS; OTHER ALCOHOLIC BEVERAGES; PASTEURISATION; PERFORMING OPERATIONS; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS; POLYSACCHARIDES; PREPARATION THEREOF; PRESERVATION; PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL; PURIFICATION; SPIRITS; STERILISATION; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES; TRANSPORTING; TRAPPING; VINEGAR; WINE

Water insoluble chitosan in the form of powder having a particle size of 5-50 microns, is claimed. Independent claims are included for: (1) a composition comprising the chitosan; and (2) #a method of curative and/or preventive treatment of a food liquid of vegetable origin, such as a food liquid of plant origin prepared by fermentation, where undesirable yeasts are to be eliminated, of which the presence is to be prevented, and/or where the population is to controlled, preferably yeasts of genus Brettanomycesand/or Dekkera, preferably yeasts of B. anomalus, B. bruxellensis, B. claussenii, B. custersianus, B. Lambicus, B. naardenensisand/or B. nanus, comprising placing, in the presence of food liquid with a water insoluble chitosan in powder form of which a particle size is 0.1-200 microns at a concentration of 1-10 g/hl of food liquid to be processed, preferably 2-5 g/hl of food liquid to be processed, the chitosan or the composition. ACTIVITY : Fungicide; Antibacterial. MECHANISM OF ACTION : None given. L'invention concerne un chitosane sous forme de poudre micronisée, son utilisation pour lutter contre certaines levures, comme des Brettanomyces , et une méthode de traitement d'un liquide alimentaire.