Microcapsule with controllable or delayed release for...

A - Human Necessities – 61 – K

Patent

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A61K 9/16 (2006.01)

Patent

CA 2553657

The invention relates to a microcapsule, particularly for immobilizing chemical and/or biological material, in addition to a method for the production thereof. Said capsule is stable in concentrated media but can be destroyed when the medium is diluted and undergoes relatively low mechanical impingement, whereupon the material included therein is released. According to the invention, said material can be a chemical substance such as an active substance or an enzyme or consist of biological material such as microorganisms, cells or mixtures thereof.

L'invention concerne une microcapsule, destinée notamment à immobiliser une substance chimique et/ou biologique, ainsi qu'un procédé de fabrication associé. Cette microcapsule, qui est stable dans des milieux concentrés, est détruite par une sollicitation mécanique relativement faible lorsque le milieu est dilué, libérant ainsi la substance qu'elle contient. Selon l'invention, cette substance peut être chimique, comme un agent actif ou une enzyme, ou bien biologique comme des micro- organismes, des cellules ou des mélanges de ceux-ci.

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