Refining of edible oil rich in natural carotenes and vitamin e

C - Chemistry – Metallurgy – 11 – B

Patent

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C11B 3/12 (2006.01) A23D 9/02 (2006.01) A23D 9/04 (2006.01)

Patent

CA 2270344

8 The invention discloses a process for the production of a natural carotene rich refined and deodorised oil by subjecting the oil to a pressure of less than 0.060 mbar and to a temperature of less than 200°C and wherein the process includes the steps of distilling the oil in a short-path distiller at a temperature range of 160°C-210°C and at pressures of 0.003 mbar to 0.08 mbar and removing free fatty acids (FFA) in the oil by condensation within the distiller. The FFA is removed by subjecting the mixture of the oil and the FFA to an internal condensor system operating at a temperature greater than the melting point of FFA in the oil. The process yields in refined, deodorised oil, in particular palm oil where the carotene and Vitamin E contained the feed oil is substantially retained in the processed oil.

L'invention concerne un procédé permettant de produire de l'huile raffinée et désodorisée, riche en carotène naturel, en soumettant ladite huile à une pression inférieure à 0,060 millibars et à une température inférieure à 200 DEG C. Le procédé consiste à distiller l'huile dans un distillateur de trajet court, à une température comprise entre 160 DEG C et 290 DEG C et à des pressions comprises entre 0,003 et 0,08 millibars, puis à éliminer, par condensation à l'intérieur du distillateur, les acides gras libres présents dans l'huile. On élimine les acides gras libres en soumettant le mélange d'huile et d'acides gras libres à un système condensateur interne fonctionnant à une température supérieure au point de fusion des acides gras libres dans l'huile. Le procédé produit de l'huile raffinée désodorisée, en particulier de l'huile de palme dans laquelle le carotène et la vitamine E présents dans l'huile d'alimentation sont sensiblement conservés dans l'huile traitée.

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