STABLE, AQUEOUS DISPERSIONS AND STABLE, WATER-DISPERSIBLE DRY POWDERS OF XANTHOPHYLLS, AND PRODUCTION AND USE OF THE SAME

摘要

The invention relates to the production of a stable, aqueous dispersion or of a stable water-dispersible dry powder of xanthophylls chosen from a group consisting of astaxanthin, lutein and zeaxanthin, by a) dissolving one or more of the aforementioned xanthophylls in a water-miscible, organic solvent or a mixture of water and a water-miscible, organic solvent at temperatures greater than 30 DEG C; b) mixing this solution with an aqueous solution of a protective colloid, the solvent components being converted to the aqueous phase and the hydrophobic phase of the xanthophyll being produced in the form of a nanodisperse phase c) and optionally, converting the resulting dispersion into a water-dispersible dry powder by separating off the solvent and the water and drying, optionally in the presence of a coating material. The invention is characterised in that the protective colloid used in step b) of the method is casein or a caseinate.