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US 2015/0307424 A1Published application
Process for the production and separation of mannitol and sorbitol from a mixture which was obtained by hydrogenation of a precursor
AssigneeSyral Belgium NV
InventorsFrank VAN LANCKER, Liesbeth LEHOUCQ
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Abstract
An improved method for the processing of substrates containing a starting material (precursor) of mannitol, wherein all of the fractions obtained can be recovered, thus eliminating waste.
Claims10
Method for the separation of a substrate containing fructose and/or mannose that contains a mannitol precursor into several fractions, comprising the following steps:
- a) hydrogenation of said substrate into a hydrogenated substrate;
- b) chromatographic separation of the hydrogenated substrate by a continuous process into:
- a mannitol-rich fraction,
- a first sorbitol fraction having high purity and containing less than 0.2% total reducing sugars,
- a second sorbitol fraction;
- c) crystallisation of the mannitol-rich fraction into a third fraction of crystalline mannitol, with a mother liquor being formed;
- and
- d) readdition of the mother liquor to the hydrogenated substrate.
5 more elements
Method for the separation of a substrate containing fructose and/or mannose that contains a mannitol precursor into several fractions, comprising the following steps:
- a) hydrogenation of the aforementioned substrate into a hydrogenated substrate;
- b) crystallisation of the hydrogenated substrate, thus forming a third fraction containing crystalline mannitol and a mother liquor;
- c) chromatographic separation of the mother liquor formed into:
- a mannitol-rich fraction,
- a first sorbitol fraction having high purity and containing less than 0.2% total reducing sugars, and
- a second sorbitol fraction;
- and
- d) readdition of the mannitol-rich subfraction formed to the hydrogenated substrate for crystallisation.
5 more elements
Dependencies are inferred from the claim text.