Low trans-fatty acid fat compositions; low-temperature...

A - Human Necessities – 23 – D

Patent

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A23D 7/00 (2006.01) A23D 7/02 (2006.01) A23G 9/32 (2006.01) B01J 23/755 (2006.01) C11C 3/12 (2006.01)

Patent

CA 2534122

The present disclosure provides low trans-fatty acid fat compositions, methods of hydrogenating unsaturated feedstocks (e.g., oils), and hydrogenation catalyst compositions. One exemplary method involves producing a catalyst composition by heating a nickel-based catalyst to a first temperature of at least about 85~ C in the presence of hydrogen and a fat component. An unsaturated feedstock may be contacted with the catalyst composition and hydrogenated by sustaining a hydrogenation reaction at a second temperature of no greater than about 700 C. Some specific implementations of the invention permit the production of partially hydrogenated seed oils with low trans-fatty acid contents.

L'invention concerne des compositions à faible teneur en acides gras trans, des procédés d'hydrogénation de produits de charge insaturés (p. ex. d'huiles), et des compositions de catalyseurs d'hydrogénation. Un de ces procédés consiste à produire une composition de catalyseurs en chauffant un catalyseur à base de nickel à une première température d'au moins 85· C environ, en présence d'hydrogène et d'une fraction lipidique. On peut mettre en contact un produit de charge insaturé avec cette composition de catalyseur et l'hydrogéner en le soumettant à une réaction d'hydrogénation à une seconde température ne dépassant pas 70?0¿ C environ. Certains modes de mise en oeuvre spécifiques de cette invention permettent de produire des huiles de graines partiellement hydrogénées présentant une teneur réduite en acides gras trans.

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