B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 11/02 (2006.01)
Patent
CA 2387858
The invention relates to a method for extracting one or more active compounds from a starting material using a supercritical fluid, said compounds being for introduction into the formulation of a cosmetic, pharmaceutical or food composition containing at least one excipient. The inventive method comprises the following steps: placing said starting material containing the active compounds in the presence of at least one extraction fluid in a supercritical state and containing CO2 and at least one co-solvent; separating said extraction fluid containing at least a proportion of the active compound(s); causing the CO2 contained in the extraction fluid to vaporize in order to obtain an extract consisting of said co-solvent and said proportion of the active compound(s); recovering the extract consisting of the co-solvent/active compound mixture. The method is characterised in that said co-solvent consists of said excipient.
L'invention concerne un procédé d'extraction par fluide supercritique d'un ou plusieurs composés actifs destiné(s) à entrer dans la formulation d'une composition cosmétique, pharmaceutique ou alimentaire contenant au moins un excipient, à partir d'une matière première, ledit procédé comprenant les étapes consistant à: mettre en contact ladite matiére premiére contenant les composés actifs en présence d'au moins un fluide d'extraction à l'état supercritique comprenant du CO¿2? et au moins un co-solvant; séparer ledit fluide d'extraction contenant au moins une partie du ou des composés actifs; provoquer la vaporisation du CO¿2? contenu dans le fluide d'extraction pour obtenir un extrait constitué dudit co-solvant et de ladite partie du ou des composés actifs; récupérer ledit extrait constitué par le mélange co-solvant/composé(s) actif(s); caractérisé en ce que, ledit co-solvant est constitué par ledit excipient.
Hitex
Mengal Philippe
Ogilvy Renault
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