Process for the production of erythorbic acid

Details Process for the production of erythorbic acid Process for the production of erythorbic acid

1997-11-26

1999-01-12

Lilling, Herbert J.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

210650, 210651, 210660, 210663, 210669, 210692, 435126, 435137, 435806, 519317, 514474, 562580, C12P 1704, C12P 758, C07D30512, C07C 5142

Patent

active

058592628

ABSTRACT:
The invention provides a process for the recovery of erythorbic acid from an aqueous feed solution containing values of erythorbic acid at a concentration of less than 0.7 mol/kg, comprising adsorbing a major portion of said erythorbic acid with a solid phase adsorbent resin selected from resins carrying a pyridine function and resins of similar or weaker basicity; separating said erythorbic acid-containing resin from residual aqueous solution, and subjecting said erythorbic acid-containing resin to a desorbing operation with a neutral solvent at a temperature of at least 20.degree. C. higher than the temperature at which said adsorption is carried out, whereby there is obtained a solution of erythorbic acid in solvent in which the concentration of erythorbic acid is at least equal to its concentration in said aqueous feed solution.

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