Reduced calorie cooking oils and preparation thereof

C - Chemistry – Metallurgy – 07 – H

Patent

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Details

C07H 13/06 (2006.01) A23D 9/007 (2006.01) A23D 9/013 (2006.01) A23L 1/308 (2006.01) C07H 15/04 (2006.01)

Patent

CA 2279284

The present invention relates to a process for preparing reduced calorie cooking and frying oils, containing nondigestible polyol polyesters, and having improved color and improved stability against hydrolysis during frying. The process comprises, as a first step, treating a crude polyol polyester with an ion exchange ligand in an aqueous phase to convert divalent metal soaps present in the crude polyol polyester to monovalent soaps. The monovalent soaps and the ion exchange ligands are then removed from the treated polyol polyester to provide a cooking and frying oil which contains less than about 550 ppb divalent metal ions. Said oil, when further processed according to conventional industry standards will have a free fatty acid content of less than about 500 ppm. Preferably, the cooking and frying oils prepared according to the process of the present invention will further have a Lovibond red color of less than about 6, preferably less than about 4.

La présente invention porte sur un procédé de préparation d'huiles de cuisson et de friture à teneur réduite en calories, ces huiles contenant des polyesters polyols non digérables, ayant une meilleure tenue de couleur et une plus grande stabilité à l'hydrolyse lors de la friture. Ce procédé consiste, en une première étape, à traiter un polyester polyol brut avec un ligand échangeur d'ions en phase aqueuse pour transformer des savons métalliques divalents présents dans ce polyester polyol brut en savons monovalents. Les savons monovalents et les ligands échangeurs d'ions sont ensuite retirés du polyester polyol traité pour obtenir une huile de cuisson et de friture contenant moins d'environ 550 ppb d'ions métalliques divalents. Cette huile, lorsqu'elle est ensuite traitée selon des normes industrielles traditionnelles, aura une teneur en acides gras inférieure à environ 550 ppm. De préférence, les huiles de cuisson et de friture préparées selon le procédé de l'invention, aura une couleur rouge de Lovibond inférieure à environ 6, de préférence environ 4.

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