A controlled release micro-capsule for osteogenic action

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/50 (2006.01) A61K 9/16 (2006.01)

Patent

CA 2753993

The present invention relates to a microcapsule for controlled release of flavanoid compound and a process for preparation thereof. The microcapsule comprising a core particle consisting of a calcium salt, Pluronic F68 [poly (ethylene oxide-co-polypropylene oxide), block poly oxyethylene-polypropylene block copolymer], loaded with a flavanoid compound, the resulting core particle having a plurality of alternate layers of cationic and anionic polyelectrolytes adsorbed thereon and an outer layer formed by a bile salt, wherein the flavanoid is ranging between 10 to 96 % by weight.

La présente invention concerne une microcapsule permettant la libération contrôlée d'un composé flavonoïde, ainsi que son procédé de préparation. La microcapsule contient une particule noyau constituée d'un sel de calcium, de Pluronic F68 [copolymère séquencé de polyoxyde d'éthylène et de polyoxyde de propylène, copolymère séquencé de polyéthylène et de polypropylène], chargée avec un composé flavonoïde. La particule noyau résultante est recouverte d'une pluralité de couches alternées de polyélectrolytes cationiques et anioniques adsorbées et d'une couche externe constituée d'un sel biliaire, le flavonoïde étant présent en une quantité variant de 10 à 96 % en poids.

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