Process for extracting polyphenolic antioxidants from...

A - Human Necessities – 61 – K

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A61K 36/185 (2006.01) A23G 1/00 (2006.01) A23L 1/30 (2006.01) A23L 3/3472 (2006.01) A61K 8/97 (2006.01) A61K 36/00 (2006.01) A61Q 19/00 (2006.01) C07C 37/00 (2006.01)

Patent

CA 2361531

A process for isolating polyphenolic antioxidants from purine-containing plant material, comprising the steps of: (a) extracting the plant material with a hydroxylic extracting liquid preferably at low temperature; (b) selectively adsorbing the extract obtained in step (a), preferably at low temperature; and (c) desorbing the adsorbed material with a hydroxylic desorbing liquid, preferably at relatively high temperature. The process is especially suitable for producing cocoa antioxidants of use in pharmaceutical, cosmetic and nutritional compositions.

Cette invention concerne un procédé permettant d'isoler des antioxydants polyphénoliques à partir d'un matériau végétal renfermant de la purine. Ce procédé consiste à: (a) extraire le matériau végétal au moyen d'un liquide d'extraction hydroxylique, de préférence à basse température; (b) procéder à une adsorption sélective de l'extrait obtenue en (a), toujours de préférence à basse température; et (c), procéder à une désorption du matériau adsorbé au moyen d'un liquide de désorption hydroxylique, de préférence à température relativement élevée. Ce procédé convient tout particulièrement bien pour l'obtention d'antioxydants de cacao destinés à des compositions pharmaceutiques, cosmétiques et diététiques.

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