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    • 85. 发明申请
    • METHOD FOR THE EMBEDDING AND ENCAPSULATION OF COMPONENTS
    • 组件嵌入和封装的方法
    • US20140147501A1
    • 2014-05-29
    • US14167097
    • 2014-01-29
    • GENERAL MILLS, INC.
    • Bernhard H. VAN LENGERICH
    • A61K9/20A23L1/00
    • A61K9/2086A23L27/72A23P10/30B01J13/02B29B7/421B29B7/46B29B7/482B29B7/823B29B7/845B29B7/86B29C48/40B29C48/832
    • Controlled release, discrete, solid particles which contain an encapsulated and/or embedded component such as a heat sensitive or readily oxidizable pharmaceutically, biologically, or nutritionally active component are continuously produced without substantial destruction of the matrix material or encapsulant. A release-rate controlling component is incorporated into the matrix to control the rate of release of the encapsulant from the particles. The additional component may be a hydrophobic component or a high water binding capacity component for extending the release time. The plasticizable matrix material, such as starch, is admixed with at least one plasticizer, such as water, and at least one release-rate controlling component under low shear mixing conditions to plasticize the plasticizable material without substantially destroying the at least one plasticizable material and to obtain a substantially homogeneous plasticized mass. The plasticizer content is substantially reduced and the temperature of the plasticized mass are substantially reduced prior to admixing the plasticized mass with the encapsulant to avoid substantial destruction of the encapsulant and to obtain a formable, extrudable mixture. The mixture is extruded through a die without substantial or essentially no expansion and cut into discrete, relatively dense particles. Release properties may also be controlled by precoating the encapsulant and/or coating the extrudate particles with a film-forming component.
    • 含有包封和/或嵌入的组分如热敏或易氧化的药学,生物学或营养活性组分的受控释放的离散固体颗粒被连续地生产而基本上不破坏基质材料或密封剂。 将释放速率控制组分并入基质中以控制密封剂从颗粒中释放的速率。 附加组分可以是用于延长释放时间的疏水组分或高水结合能力组分。 可塑性基质材料如淀粉在低剪切混合条件下与至少一种增塑剂(例如水)和至少一种释放速率控制组分混合,以塑化可塑化材料,而基本上不破坏至少一种可塑化材料, 以获得基本均匀的增塑物质。 在将塑化物料与密封剂混合之前,增塑剂含量显着降低,并且塑化物料的温度显着降低,以避免密封剂的实质破坏并获得可成形的可挤压混合物。 将混合物通过模具挤出而没有实质或基本上没有膨胀,并切成离散的相对致密的颗粒。 释放性质也可以通过预先涂覆密封剂和/或用成膜组分涂覆挤出物颗粒来控制。