Separation of sugars, sugar alcohols, carbohydrates and mixtures thereof
AssigneeSaniscoSweetners Oy
InventorsHeikki Heikkilä, Päivi Sarmala, Ari Kärki, Nina Nurmi, Hannu Paananen
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Abstract
The present invention relates to a method of separating sugars and sugar alcohols from each other. More particularly the present invention relates to the use of a weakly basic anion exchange resin in a chromatographic separation process. The advantage of the present invention compared with the prior art is that it is especially suitable for separating reducing sugars in acidic conditions as well as for example in weakly acidic conditions. The method using chromatographic separation comprises at least one step where a weakly basic anion exchange resin is used in a chromatographic column or in a part of a column.
Claims29
A chromatographic separation method for separating a component from at least one other component in a solution comprising a mixture comprised of said component and said at least one other component, wherein said component and said at least one other component are selected from the group consisting of arabinose, rhamnose, glucose, xylitol, erythritol, inositol, mannitol, glycerol and betaine;
- wherein the method comprises at least one chromatographic separation step with a weakly basic anion exchange resin for separating said component from said at least one other component wherein said step comprises
- feeding said solution into a chromatographic column filled with the weakly basic anion exchange resin having an average particle size of 100-2000 micrometers, eluting said column with water and recovering a product fraction or product fractions, where the content of said component is higher than in the solution fed into the chromatographic separation step.
A chromatographic separation method for separating rhamnose from at least one other component in a solution comprising a mixture comprised of rhamnose and said at least one other component, wherein said at least one other component is selected from the group consisting of xylose, arabinose, glucose, xylitol, erythritol, inositol, mannitol, glycerol and betaine;
- wherein the method comprises at least one chromatographic separation step with a weakly basic anion exchange resin for separating rhamnose from said at least one other component, wherein said step comprises
- feeding said solution into a chromatographic column filled with the weakly basic anion exchange resin having an average particle size of 100-2000 micrometers, eluting said column with water and recovering a product fraction or product fractions, where the content of rhamnose is higher than in the solution fed into the chromatographic separation step.
A chromatographic separation method for separating rhamnose from a component selected from arabinose and xylose in a solution comprising a mixture comprised of rhamnose and at least one of arabinose and xylose, wherein the method comprises at least one chromatographic separation step with a weakly basic anion exchange resin for separating rhamnose from at least one of arabinose and xylose, wherein said step comprises
- feeding said solution into a chromatographic column filled with the weakly basic anion exchange resin having an average particle size of 100-2000 micrometers, eluting said column with water and recovering a product fraction or product fractions, where the content of rhamnose is higher than in the solution fed into the chromatographic separation step, and optionally a product fraction or product fractions, where the content of at least one of arabinose and xylose is higher than in the solution fed into the chromatographic separation step.
A chromatographic separation method for separating betaine from a component selected from inositol, glycerol and mannitol in a solution comprising betaine and at least one of inositol, glycerol and mannitol, wherein the method comprises at least one chromatographic separation step with a weakly basic anion exchange resin for separating betaine from at least one of inositol, glycerol and mannitol, wherein said step comprises
- feeding said solution into a chromatographic column filled with the weakly basic anion exchange resin having an average particle size of 100-2000 micrometers, eluting said column with water and recovering a product fraction or product fractions, where the content of betaine is higher than in the solution fed into the chromatographic separation step, and optionally a product fraction or product fractions, where the content of at least one of inositol, glycerol and mannitol is higher than in the solution fed into the chromatographic separation step.
A chromatographic separation method for separating inositol from a component selected from glycerol and mannitol in a solution comprising inositol and at least one of glycerol and mannitol, wherein the method comprises at least one chromatographic separation step with a weakly basic anion exchange resin for separating inositol from at least one of glycerol and mannitol, wherein said step comprises
- feeding said solution into a chromatographic column filled with the weakly basic anion exchange resin having an average particle size of 100-2000 micrometers, eluting said column with water and recovering a product fraction or product fractions, where the content of inositol is higher than in the solution fed into the chromatographic separation step, and optionally a product fraction or product fractions, where the content of at least one of glycerol and mannitol is higher than in the solution fed into the chromatographic separation step.
Dependencies are inferred from the claim text.