The system dehydroascorbic acid-glutathione

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Abstract
The enzyme catalyzing the reduction of dehydroascorbic acid by SH glutathione has been separated from the associated ascorbic-acid oxidase. It is responsible for the protection of ascorbic acid by glutathione in cauliflower juice. Its activity varies in different plants. Its properties and some preliminary observations on the kinetics of the reaction are descr. and its possible role as an "end system" in plants is discussed. Some indication is given that oxidation of ascorbic acid by the oxidase or by simple chemical reagents gives rise to the same form of dehydroascorbic acid.