A process for the isolation, recovery and purification of...

B - Operations – Transporting – 01 – D

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B01D 15/08 (2006.01) B01D 15/32 (2006.01) B01J 20/26 (2006.01) B01J 20/291 (2006.01) B01J 20/32 (2006.01) B01D 15/16 (2006.01) B01D 15/20 (2006.01)

Patent

CA 2317495

A process is described for the isolation, recovery and purification of non-polar extractives using one or more extracting solvents from the group of lower alcohols, ketones, and water. The non-polar extractives may include one or more of the classes alk(en)lyresorcinols, steroid, triterpenoid and cardiac glycosides and saponins, steryl ferulates and other phenolic acid conjugates, flavonoids, polar lipids, alcohol-soluble antimicrobials, prolamines and other alcohol-soluble proteolipids complexes. The process uses an aliphatic-substituted polysaccharide gel matrix in a process of hydrophobic interaction chromatography, and involves the steps of absorption, washing and recovery, wherein the extractives are absorbed and desorbed in the presence of and as a result of the concentration and selection of the organic solvent. The method further includes the optional step of regenerating the gel matrix for further use.

L'invention concerne un procédé d'isolement, de récupération et de purification d'extraits non polaires au moyen d'un ou de plusieurs solvants d'extraction choisi(s) entre des alcools inférieurs et des cétones, et d'eau. Les extraits non polaires peuvent appartenir à une ou à plusieurs des classes comprenant des alk(èn)ylrésorcinols, des glycosides cardiaques et des saponines stéroïdes, triterpénoïdes, des férulates de stéryle et d'autres conjugués acides phénoliques, des flavonoïdes, des lipides polaires, des antimicrobiens solubles dans l'alcool, des prolamines et d'autres complexes protéolipidiques solubles dans l'alcool. Le procédé utilise une matrice de gel de polysaccharide aliphatique substitué dans un procédé de chromatographie à interaction hydrophobe, et comporte des étapes d'absorption, de lavage et de récupération, les extraits étant absorbés et désorbés en présence du solvant organique et suite à la concentration et à la sélection de celui-ci. Le procédé comporte en outre une étape facultative de régénération de la matrice de gel en vue d'une utilisation ultérieure.

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