Abstract
In order to study the mechanism of the oxidation of ascorbic acid by metal ion, ascorbic acid solution was oxidized with cupric or ferrous ion by the aeration at room temperature. The reacting solution became brown, and oxalic acid, L-threonic acid and carbon dioxide were detected as oxidized products and the existence of some reductones was supposed. From above results, the decomposition mechanism of ascorbic acid by metal ion was supposed as indicated in Figure 2.
