Process for preparing high 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid content product
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United States of America Patent
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Nov 21, 1995
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N/A
app pub date -
Oct 21, 1992
filing date -
Oct 23, 1991
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Abstract
Disclosed is an industrial-scale preparation of a high 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid content product with an improved purity, the preparation comprising subjecting a solution containing 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid and a saccharide derivative of L-ascorbic acid exhibiting a direct reducing activity to an oxidation treatment, subjecting the resultant mixture ti column chromatography using a strongly-acidic cation exchange resin, and recoverying the resultant high 2-O-.alpha.-D-glucopyranosyl-L-ascorbic acid content fraction. Thus, the preparatiobn has a great significance in the industrial field.
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