Method for the direct esterification of sorbitol with fatty...

C - Chemistry – Metallurgy – 07 – D

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C07D 307/20 (2006.01) C07C 67/08 (2006.01) C07C 69/21 (2006.01) C07C 69/33 (2006.01)

Patent

CA 2388296

Mixtures of sorbitol fatty acid esters useful as low calorie fat substitutes are prepared through a direct esterification process. The process entails the direct esterification of sorbitol with free fatty acids, optionally in the presence of an esterification catalyst. The resulting sorbitol esters have an average degree of hydroxyl substitution ranging from about 3 to about 5.5. This partial esterification leads to a mixture of esters capable of serving as low calorie fat substitutes without undesirable physiological side effects or the need for additives. Furthermore, the direct esterification process proceeds without the need for large amounts of organic solvents of bleaching agents.

La présente invention concerne des mélanges d'esters d'acides gras de sorbitol, utilisés en tant que substitut de matière grasse hypocalorique, qui sont préparés selon un procédé d'estérification directe. Ce procédé implique l'estérification directe de sorbitol avec trois acides gras, éventuellement en présence d'un catalyseur d'estérification. Les esters de sorbitol résultants présentent un degré moyen de substitution hydroxyle allant d'environ 3 à environ 5,5. Cette estérification partielle conduit à un mélange d'esters qui peuvent servir de substituts de matière grasse hypocaloriques, sans effets secondaires physiologiques indésirables ou ne nécessitant pas d'additifs. De plus, le procédé d'estérification directe selon l'invention ne nécessite pas la mise en oeuvre de grande quantités de solvants organiques ou d'agents de blanchiment.

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