Purification of polydextrose by reverse osmosis

Details Purification of polydextrose by reverse osmosis Purification of polydextrose by reverse osmosis

1988-05-13

1990-09-11

Nutter, Nathan M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536127, C08B 3702, C07H 106, C07H 108

Patent

active

049564587

ABSTRACT:
The present invention is a process for purifying polydextrose to remove manufacturing contaminants such as glucose, sorbitol, citric acid, oligomers, 1,6-anhydroglucose, 5-hydroxymethylfurfural and other low molecular weight constituents by reverse osmosis wherein an aqueous solution of polydextrose is filtered by pressing it tangentially over a porous membrane at high pressure. This invention process produces a purified polydextrose with the 1,6-anhydroglucose content therein reduced to less than about 0.2% (W/W) and a reduction in the 5-hydroxymethylfurfural content to below detectable levels or loss than about 0.01% (W/W), thereby virtually eliminating any bitter taste or musty off-flavor.

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