Degradation of L-Ascorbic Acid and Mechanism of Nonenzymic Browning Reaction

Part III. Oxidative Degradation of L-Ascorbic Acid (Degradation of Dehydro-L-ascorbic Acid)

抄録

Furfural, ethylglyoxal, 2-keto-3-deoxy-L-pentono-γ-lactose and L-xylosone were isolated as their mono- or bis-2, 4-dinitrophenylhydrazones from the degradation solution of dehydro-L-ascorbic acid in 5% sulfuric acid. The mechanisms of the formation of these carbonyl compounds were discussed.
A mechanism of the degradation of dehydro-L-ascorbic acid in 5% sulfuric acid solution, including the formation of 2-furoic acid, was proposed.