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    55.
    发明专利
    未知

    公开(公告)号：AT222278T

    公开(公告)日：2002-08-15

    申请号：AT97952027

    申请日：1997-12-01

    Applicant: BASF AG

    Inventor： AUWETER HELMUT ,  BOHN HERIBERT ,  LUEDDECKE ERIK

    IPC: A23K20/179 ,  A23L1/275 ,  A23L5/44 ,  A61K9/14 ,  A61K9/16 ,  A61K31/047 ,  A61K31/122 ,  A61K47/08 ,  C09B61/00 ,  C09B67/42 ,  C09B67/46

    Abstract: Preparation of a stable aqueous dispersion, or a stable water-dispersible dry powder, of xanthophylls, which comprisesa) preparing a molecularly dispersed solution of at least one xanthophyll, with or without an emulsifier and/or an edible oil, in a water-miscible organic solvent, or a mixture of water and a water-miscible organic solvent, at above 30° C.,b) mixing this solution with an aqueous solution of a mixture of protective colloids,b1) in which the mixture comprises at least one low-molecular-weight protective colloid component and at least one high-molecular-weight protective colloid component, whose mean molecular weights differ by at least 10,000,b2) the solvent component being transferred to the aqueous phase and the hydrophobic phase of the xanthophyll being formed as a nanodispersed phasec) and if appropriate, to prepare a water-dispersible dry powder, freeing the resulting dispersion from the solvent and the water and drying it in the presence or absence of a coating material.

    56.
    发明专利
    未知

    公开(公告)号：NO20015238L

    公开(公告)日：2001-12-28

    申请号：NO20015238

    申请日：2001-10-26

    Applicant: BASF AG

    Inventor： AUWETER HELMUT ,  BOHN HERIBERT ,  LUEDDECKE ERIK

    IPC: A23K20/179 ,  A23K40/10 ,  A23L1/275 ,  A23L5/44 ,  A61K9/14 ,  A61K31/047 ,  A61K31/122 ,  A61K47/10 ,  C09B61/00 ,  C09B67/06 ,  C09B67/08 ,  C09B67/20 ,  C09B67/46

    Abstract: A process for preparing a stable, aqueous dispersion or a stable water-dispersible dry powder of xanthophylls selected from the group consisting of astaxanthin, lutein and zeaxanthin, bya) dissolving one or more of the abovementioned xanthophylls in a water-miscible organic solvent or a mixture of water and a water-miscible organic solvent at temperatures above 30° C.,b) mixing this solution with an aqueous solution of a protective colloid, the solvent component being transferred into the aqueous phase, and the hydrophobic phase of the xanthophyll resulting as nanodisperse phasec) and, where appropriate, converting the dispersion which has formed into a water-dispersible dry powder by removing the solvent and the water and drying, where appropriate in the presence of a coating material,wherein casein or a caseinate is used as protective colloid in step b).

    60.
    发明专利
    未知

    公开(公告)号：BR9701263A

    公开(公告)日：1998-11-10

    申请号：BR9701263

    申请日：1997-03-11

    Applicant: BASF AG

    Inventor： LUEDDECKE ERIK ,  SCHWEIKERT LONI

    IPC: A23K1/00 ,  A23K1/16 ,  A23L1/275 ,  A23L2/58 ,  A23L5/44 ,  A61K9/10 ,  A61K47/24 ,  C09B61/00 ,  C09B67/46 ,  C09K23/00

    Abstract: The preparation of a finely-divided carotinoid or retinoid suspension comprises dissolving the material in a volatile water-miscible organic solvent at 50-250 degrees C (optionally under increased pressure) within 10 seconds and then immediately mixing the solution with an aqueous medium at 0-90 degrees C in the absence of protective colloid and in the presence of a physiologically acceptable emulsifier. Also claimed is a finely-divided carotinoid or retinoid suspension free from protective colloid contains an emulsifier chosen from lecithin, mono-, di- or tri-glycerides of aliphatic (optionally acetylated) polycarboxylic acids (eg citric or tartaric acid) or ascorbyl palmitate.

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