| 摘要 |
Disclosed is a process for producing a high alphaG-AA content product, which comprises the steps of: contacting a solution as a material solution, containing alphaG-AA, L-ascorbic acid, and a saccharides), with an anion exchange resin packed in a column to adsorb the alphaG-AA and L-ascorbic acid on the anion exchanger; washing the anion exchanger with water to remove the saccharide(s) therefrom; feeding to the column an aqueous solution, as an eluent, of an acid and/or a salt with a concentration of less than 0.5 N to fractionate a fraction rich in 2-O-alpha-D-glucopyranosyl-L-ascorbic acid and a fraction rich in L-ascorbic acid; and collecting the former fraction.
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