Method for extracting xanthophylls from corn

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 29/76 (2006.01) B01D 11/04 (2006.01) B01D 61/14 (2006.01) C07C 1/00 (2006.01)

Patent

CA 2426757

The method of the invention uses raw corn, or a corn by-product as a source. The source is mixed with an alcohol (2) to produce an alcohol-corn slurry. Centrifugation or filtration (3) produces a clear filtrate from the alcohol- corn slurry. A membrane filtration (4a) step is then used to separate purified xanthophylls. Other steps may be combined with the basic process to produce additional corn products, such as oil and zein.

L'invention concerne une méthode utilisant du maïs ou un produit dérivé du maïs comme source. Cette source est mélangée avec un alcool (2) pour produire une suspension épaisse à base d'alcool et de maïs. Après centrifugation et filtration (3) de la suspension épaisse, on obtient un filtrat clair. On procède ensuite à une filtration sur membrane (4a) pour séparer les pigments xanthophylles purifiés. D'autres étapes peuvent être combinées avec le procédé de base pour produire des produits supplémentaires à base de maïs, telle que de l'huile et de la zéine.

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