Method of encapsulating active ingredients in liposomes

    公开(公告)号:US12246091B2

    公开(公告)日:2025-03-11

    申请号:US17268003

    申请日:2019-04-29

    Applicant: ABNOBA GMBH

    Abstract: A method for encapsulating active ingredients in liposomes having an active ingredient solution encapsulated with a bilayer composed of two monomolecular layers of amphiphilic compounds comprises: (a) providing the active ingredient solution; (b) providing an emulsion by emulsifying the active ingredient solution in a first liquid in the presence of the amphiphilic compound; (c) providing a liquid phase; (d) contacting the emulsion with the liquid phase to form a phase boundary; and (e) centrifuging the emulsion and the liquid phase that are in contact with one another via the phase boundary, wherein, on passage of the phase boundary, the amphiphilic compound enriched there is added onto the monomolecular inner layer to form a monomolecular outer layer, in order to create the bilayer. The first liquid of the emulsion is chosen such that the solubility of the amphiphilic compound in the first liquid is not more than 1×10−4 mol/l.

    PROCESS FOR PRODUCING MICROPARTICLES LADEN WITH AN AROMA CHEMICAL

    公开(公告)号:US20230390167A1

    公开(公告)日:2023-12-07

    申请号:US18033087

    申请日:2021-10-29

    Applicant: BASF SE

    Abstract: The present invention relates to a process for producing polymer microparticles laden with at least one aroma chemical, which comprises i. dissolving the at least one aroma chemical and an organic polymer composition, which contains at least one polyester as a main constituent, in a volatile organic solvent having a boiling point lower than the boiling point of the aroma chemical and having a solubility in water of at most 100 g/L at 20° C. and 1013 mbar, whereby a solution of the aroma chemical and the organic polymer composition is obtained; ii. emulsifying the solution obtained in step i. in an aqueous medium containing at least one dispersant; iii. removing the volatile organic solvent from the emulsion by evaporation at a temperature of below 80° C. and at a pressure below atmospheric pressure, whereby an aqueous suspension of the laden polymer microparticles is obtained. The present invention also relates to microparticles laden with an aroma chemical, obtainable by the process described herein and to products containing the microparticle composition. The compositions are useful as additives for imparting a scent or flavour to a product. The compositions allow for controlled release of the aroma chemicals.

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