PRODUCTION OF DRY POWDERS OF SUBSTANCES WHICH ARE SENSITIVE TO OXIDATION

A process for pulverizing substances which are sensitive to oxidation, in particular oily substances, by dispersing oil-soluble substances, eg. vitamins, carotinoids, pharmaceutically active compounds or aromas. in an aqueous solution of a film-forming colloid, which constitutes the continuous phase...

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Bibliographische Detailangaben
Hauptverfasser:	SCHUMACHER, HORST, GRAFEN, PAUL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY ASINGLE OTHER SUBCLASS THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	A process for pulverizing substances which are sensitive to oxidation, in particular oily substances, by dispersing oil-soluble substances, eg. vitamins, carotinoids, pharmaceutically active compounds or aromas. in an aqueous solution of a film-forming colloid, which constitutes the continuous phase of the dispersion, with the addition of one or more substances from the group comprising the mono-, di- and polysaccharides, atomizing the dispersion, in a spray tower, in the presence of a spraying assistant and collecting the resulting particles in 3 fluidized bed, wherein, as the spraying auxiliary, a hydrophobic silica or a metal salt of a higher fatty acid is introduced above the fluidized bed and distributed uniformly in the spraying space, at a temperature at which the colloid of the atomized particles has not yet solidified, and the assistant-laden particles, the colloid material of which essentially has not yet gelatinized, is collected in a fluidized bed, and dried therein in a conventional manner.