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US 6,204,378 B1Granted
Method for producing palatinitol
AssigneeRoquette Freres
InventorsPierrick Duflot, Catherine Fouache
Life of this patent
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Abstract
A novel method for making palatinitol comprising a first step of epimerising isomaltose under conditions enabling a mixture of α-D-glucopyranosyl-(1→6)-D-mannose and isomaltose to be achieved, a second step of catalytically hydrogenating the mixture, and a third step of chromatographically depleting the isomaltitol in the hydrogenated mixture to give a roughly equimolecular mixture of α-D-glucopyranosyl-(1→6)-D-sorbitol and α-D-glucopyranosyl-(1→6)-D-mannitol.
Claims4
Process for the preparation of palatinitol, characterized in that:
- in a first stage, the epimerization of isomaltose is carried out under conditions which allow a mixture of α-D-glucopyranosyl (1→6)-D-mannose and isomaltose to be obtained,
- in a second stage, catalytic hydrogenation is carried out on this mixture,
- in a third stage, chromatographic depletion of the isomaltose in this hydrogenated mixture is carried out so as to obtain a roughly equimolecular mixture of α-D-glucopyranosyl (1→6)-D-sorbitol and α-D-glucopyranosyl (1→6)-D-mannitol.
Dependencies are inferred from the claim text.