Purification of 2-keto-L-gulonic acid

Details Purification of 2-keto-L-gulonic acid Purification of 2-keto-L-gulonic acid

1991-04-29

1993-04-13

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

562577, C07C 5100, C07C 59147

Patent

active

052024768

ABSTRACT:
According to the present invention which comprises subjecting an aqueous solution of 2-keto-L-gulonic acid or its water-soluble salt containing an acid impurity, whose acidity is higher than that of 2-keto-L-gulonic acid, to contact with an anion-exchange resin, then allowing the 2-keto-L-gulonic acid or the water-soluble salt thereof to precipitate from the processed solution obtained by allowing the impurity to be adsorbed, 2KGA or its water-soluble salt of a high purity can be separated in a high yield from an aqueous solution of 2KGA or its water-soluble salt containing acid impurities with less number of steps as compared with conventional methods.

REFERENCES:
patent: 3381027 (1968-04-01), Jaffe et al.

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