Is there an Equilibrium between Ascorbic and Dehydroascorbic Acids ?
نویسندگان
چکیده
Ascorbic Acid, Dehydroascorbic Acid, Redox Potential, Free Radical, ESR The previously reported interaction between ascorbate monoanion and dehydroascorbic acid yielding semidehydroascorbic acid has been shown to be thermodynamically unfeasible and non-existent. No evidence for radical for mation in the reinvestigation of the reaction using ESR spectroscopy under careful exclusion of air could be found. Our results show that the detection of the free radical in earlier studies resulted from the reaction of ascorbate with traces of oxygen and/or metals.
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