Process for obtaining oryzanol

C - Chemistry – Metallurgy – 11 – B

Patent

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Details

C11B 3/00 (2006.01) A23D 9/02 (2006.01) C07J 53/00 (2006.01) C11B 13/00 (2006.01)

Patent

CA 2259537

Process for the obtaining of an oryzanol concentrate from an oryzanol containing fatty substance which preferably is a crude oil, by the steps of: (A) at least one of the process steps of (A1) removal of phospholipids present and (A2) free fatty acids removal, preferably by the use of stripping; (B) alkali neutralization of the obtained product; (C) separation and removal of the obtained oil phase. Preferably, also an additional step of separation into an aqueous and an oil phase by the addition of an acid to a pH < 5, preferably to a pH < 3 and subsequent removal of any non-fatty substances such as water, alkali hydroxide and acid used from the oil phase is carried out.

Cette invention se rapporte à un procédé d'obtention d'un concentré d'oryzanol à partir d'un oryzanol contenant une substance grasse qui est de préférence une huile brute. Ledit procédé consiste (A) à procéder à au moins l'une des étapes que sont (A1) l'extraction de phospholipides présents et (A2) l'extraction d'acides gras libres, de préférence au moyen d'une désorption, (B) à effectuer une neutralisation des alcalis du produit obtenu, puis (C) à séparer et à extraire la phase huileuse obtenue. De préférence, on peut également procéder à une séparation en phases aqueuse et huileuse en ajoutant un acide de pH inférieur à 5, de préférence inférieur à 3, puis on extrait de la phase huileuse toutes les substances non acides telles que l'eau, l'hydroxyde alcalin et l'acide utilisé.

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