Column carbon treatment of polysaccharides

Details Column carbon treatment of polysaccharides Column carbon treatment of polysaccharides

C - Chemistry, Metallurgy

08

B

C08B 30/04 (2006.01) A23L 1/09 (2006.01) B01D 15/00 (2006.01) C08B 37/00 (2006.01)

Patent

CA 2058337

A process is provided for treating polysaccharides, such as starch maltodextrin and dextrin, with activated carbon, which comprises the steps of: a) dispersing the polysaccharide in an aqueous medium at up to 40% solids; b) passing the dispersed starch or dextrin through at least one column packed with pre-washed, granular, activated carbon at a flow rate of 0.1 to 20.0 bed volumes/hour which column has been loaded with wetted carbon granules, back-washed and pre-heated; and c) recovering the polysaccharide dispersion in a form which is substantially free of carbon fines. A starch, maltodextrin or dextrin prepared by this process is characterized by bland, non-objectionable color, odor and flavor and is substantially free of off-flavors.

Méthode pour traiter des polysaccharides, notamment l'amidon, la maltodextrine et la dextrine, à l'aide de charbon activé, consistant à : a) disperser le polysaccharide dans un milieu aqueux, jusqu'à 40 % en solides ou moins; b) faire passer l'amidon ou la dextrine dispersés à travers au moins une colonne garnie de charbon activé granulaire, pré-lavé, à un débit de 0,1 à 20,0 de volume de lit/heure; la colonne est garnie de granules de charbon mouillés, lavés à contre-courant et préchauffés; c) récupérer la dispersion de polysaccharides sous une forme qui soit en grande partie exempte de fines de charbon. Un amidon, une maltodextrine ou une dextrine préparés par cette méthode sont caractérisés par une couleur, une odeur et une flaveur neutres et acceptables, et ne dégagent pratiquement pas d'odeurs désagréables.

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