Method for purifying pullulan
AssigneeKabushiki Kaisha Hayashibara Seibutsukagaku Kenkyujo
InventorsKoso Kato, Tatsuo Nomura
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Abstract
A method for purifying pullulan which comprises cultivating a strain of Aureobasidium pullulans in a liquid medium, removing the cells from the culture broth, precipitating pullulan present in said broth with at least one solvent selected from the group consisting of alcohols, esters and ethers respectively with three or more carbon atoms and ketones with four or more carbon atoms to recover, and then dehydrating and/or drying the recovered pullulan.
Claims3
In a method for purifying pullulan which comprises cultivating a pullulan producing microorganism in a liquid medium, removing the cells from the culture broth, precipitating pullulan present in said broth with a solvent to recover the pullulan, and then dehydrating and/or drying the recovered pullulan, the improvement wherein said solvent is selected from the group consisting of esters, and ketones which have about 20 to 25% solubility in water.
Dependencies are inferred from the claim text.