Decomposition of Dehydro-l-ascorbic Acid and Dehydro-erythorbic Acid

Abstract

Decomposition of dehydro-l-ascorbic acid (DAA) and dehydro-erythorbic acid (DEA) in buffer solution was accelerated by increasinig pH, and by elevating temperature, especially at high pH, while it was little affected by their concentrations, the presence of 2×10^-4M, Ca⁺⁺, Cu⁺⁺, and Cr⁺⁺⁺, and aeration. At 30 and 35°C and pH 7.0, DEA decomposed more rapidly than DAA.