Abstract
Radical species generated from l-ascorbic acid 2-glucoside (2-G-AH) and OH radicals (OH•) or azide radicals (N3•) were investigated by pulse radiolysis. The OH adduct radicals formed by the reaction of 2-G-AH with OH• were converted into the ascorbic acid radical (A•−) in alkaline solutions with the elimination of glucose. Oxidation radicals with a broad absorption spectrum were produced directly upon oxidation of 2-G-AH by the oxidizing N3•, and some of these radicals were converted into A•− in strongly alkaline solutions. Ascorbic acid was detected from 60Co γ ray irradiation on strongly alkaline N2O-saturated solutions of 2-G-AH owing to disproportionation of the A•−.
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