C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 62/32 (2006.01) A23L 3/3472 (2006.01) A23L 3/3508 (2006.01) A61K 47/12 (2006.01) C07C 51/42 (2006.01)
Patent
CA 2220223
A process for the extraction and isolation of concentrated carnosic acid from plant matter of the Labiatae family including contacting the plant matter with a water-miscible solvent to form a plant extract and adjusting the pH of the plant extract to a level between 7 and while adding water in an amount sufficient to cause precipitation of impurities while retaining the carnosic acid salt in solution. The impurities are separated and the remaining aqueous solution is acidified to precipitate a highly purified carnosic acid product which is essentially odorless, flavorless and colorless.
Procédé d'extraction et d'isolement d'acide carnosique concentré de substances végétales de la famille des Labiatae, qui consiste à mettre la substance végétale en contact avec un solvant miscible avec l'eau pour former un extrait végétal, à réguler le pH dudit extrait végétal à un niveau compris entre 7 et 10 et à ajouter simultanément de l'eau en volume suffisant pour induire la précipitation des impuretés alors que le sel d'acide carnosique est retenu dans la solution. Les impuretés sont séparées et la solution aqueuse restante est acidifiée de sorte qu'un produit d'acide carnosique de grande pureté, essentiellement inodore, incolore et sans goût soit précipité.
Bailey David T.
Bank Virginia R.
King Benjamin
Richheimer Steven L.
Hauser Inc.
Hauser Inc.
Smart & Biggar
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