Patent ID: 7691297
Filing Date: 2010-04-06
Classification: A23P,B01D,B01J,F26B

Abstract:
1. A process for the manufacture of beadlet preparations of fat-soluble substances in a water-soluble or water-dispersible non-gelling matrix component, which process comprises: (a) providing a spray zone comprised of at least one nozzle in a vertical spray tower which comprises: (b) feeding an aqueous emulsion of fat-soluble substance(s) and a matrix component to the atomizer of the nozzle so that particles of the aqueous emulsion are discharged from the atomizer in the spray zone and into the spray tower, (c) feeding a starch powder to the nozzle into a space between the first and second cones such that the starch powder is discharged through the circular slot and contacts the particles of the emulsion discharged by the atomizer in the spray zone, wherein the particles are coated with an adhesive layer of the starch powder and treated with the hot air discharged from the hot air discharge channel surrounding the first cone; (d) feeding to a lower section of the spray tower a stream of cold air to form a fluidized bed of starch-covered beadlets comprising the fat-soluble substance(s) and matrix component; and (d) collecting the beadlets from the fluidized bed and discharging the beadlets from the spray tower to a dryer.