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    41.
    发明专利
    未知

    公开(公告)号：DE19919751A1

    公开(公告)日：2000-11-09

    申请号：DE19919751

    申请日：1999-04-29

    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 ,  A61K31/07

    Abstract: 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.

    Stable, aqueous dispersions and stable, water-dispersible dry xanthophyll powder, their production and use
    44.
    发明专利
    Stable, aqueous dispersions and stable, water-dispersible dry xanthophyll powder, their production and use 未知

    公开(公告)号：AU5559698A

    公开(公告)日：1998-07-03

    申请号：AU5559698

    申请日：1997-12-01

    Applicant: BASF AG

    Inventor： AUWETER HELMUT ,  BOHN HERIBERT ,  LUDDECKE 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.

    45.
    发明专利
    未知

    公开(公告)号：DE19651681A1

    公开(公告)日：1998-06-18

    申请号：DE19651681

    申请日：1996-12-12

    Applicant: BASF AG

    Inventor： AUWETER HELMUT DR ,  BOHN HERIBERT ,  LUEDDECKE ERIK DR

    IPC: A23K20/179 ,  A23L1/275 ,  A23L5/44 ,  A61K9/14 ,  A61K9/16 ,  A61K31/047 ,  A61K31/122 ,  A61K47/08 ,  C09B61/00 ,  C09B67/42 ,  C09B67/46 ,  A23K1/00 ,  A61K47/00

    Abstract: In a process for producing a stable, aqueous dispersion or a stable, water-dispersible dry xanthophyll powder: (a) a molecular disperse solution of at least one xanthophyll, if required together with an emulsifier and/or an edible oil is produced in a water-miscible organic solvent or in a mixture of water and a water-miscible, organic solvent, at temperatures above 30 DEG C; (b) this solution is mixed with an aqueous solution of a mixture of protective colloids; (b1) the mixture containing at least one low molecular protective colloid component and at least one high molecular protective colloid component whose molecular weights differ by at least 10,000; (b2) the solvent component being converted into the aqueous phase and the hydrophobic phase of the xanthophyll being produced as a nanodisperse phase; and (c) if required, the thus obtained dispersion is freed from solvent and water to produce a water-dispersible dry powder and dried, if required in the presence of a coating material.

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