PULVERULENT, WATER-DISPERSABLE CAROTENOID FORMULATIONS AND THEIR PREPARATION

    公开(公告)号:AU1070888A

    公开(公告)日:1988-07-28

    申请号:AU1070888

    申请日:1988-01-22

    Applicant: BASF AG

    Abstract: Preparation of pulverulent water-dispersible carotenoid preparations in which the carotenoid is present dissolved in an edible oil and the oil solution is present in the form of small droplets, by rapidly dissolving a carotenoid in a volatile, water-miscible, organic solvent at between 50 and 240 DEG C together with from 1.5 to 20 times the weight, based on the carotenoid, of an edible oil and also an emulsifier, under atmospheric or superatmospheric pressure, immediately mixing the resulting molecularly dispersed solution with an aqueous solution of a protective colloid at between 0 DEG C and 50 DEG C to transfer the hydrophilic solvent component into the aqueous phase, forming the hydrophobic oil phase, which contains the carotenoid in solution, as a microdisperse phase, and stripping the resulting two-phase mixture of solvent and water in a conventional manner.

    QUANTITATIVE DETERMINATION OF THE SURFACE CHARGE OF SERUM LIPOPROTEINS

    公开(公告)号:CA1152872A

    公开(公告)日:1983-08-30

    申请号:CA358618

    申请日:1980-08-20

    Applicant: BASF AG

    Abstract: O.Z. 0050/034012 Polyelectrolytic titration of serum lipoproteins, the negative surface charge of the latter being determined quantitatively by adding an excess amount of a polycation in aqueous solution to the particular serum lipoprotein and back-titrating the positive charge,of the polycation,which has not been neutralized by the negative surface charge,against a chromotropic polyanion, in the presence of a metachromatic dye as the indicator. The method is used for the diagnosis of lipometabolic disorders.

    39.
    发明专利
    未知

    公开(公告)号:DE50000657D1

    公开(公告)日:2002-11-21

    申请号:DE50000657

    申请日:2000-04-17

    Applicant: BASF AG

    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).

    40.
    发明专利
    未知

    公开(公告)号:NO312074B1

    公开(公告)日:2002-03-11

    申请号:NO992874

    申请日:1999-06-11

    Applicant: BASF AG

    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.

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