Oxidation of carbohydrates by means of peroxidases and nitroxy radicals
AssigneeCerestar Holding B.V.
InventorsRonny Vercauteren, An Heylen
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Abstract
A method of oxidising carbohydrates and/or carbohydrate derivatives having primary alcohol groups comprising contacting a reaction medium containing said carbohydrates and/or carbohydrate derivatives with a nitroxy radical mediator and a peroxidase enzyme, characterised in that the initial reaction medium contains at least 10% by weight carbohydrates and/or carbohydrate derivatives, in that the peroxidase enzyme is an oilseed peroxidase and in that a hydroperoxide and an alkali compound are gradually added to the reaction medium such that its pH is maintained at between 3.5 and 10.0 (pH-Stat); use of said method in a process for producing gluconic acid, glucaric acid and/or D-glucuronolactone.
Claims33
A method of oxidising carbohydrates and/or carbohydrate derivatives having at least one primary alcohol group comprising contacting a reaction medium containing said carbohydrates and/or carbohydrate derivatives with a nitroxy radical mediator and a peroxidase enzyme, wherein the reaction medium contains at least 10% by weight carbohydrates and/or carbohydrate derivatives, wherein the peroxidase enzyme is an oilseed peroxidase, and wherein a hydroperoxide and an alkali compound are gradually added to the reaction medium such that its pH is maintained at between 3.5 and 10.0.
Dependencies are inferred from the claim text.