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Changes of the relative amplitude (A/ADPPH) of EPR spectra of DPPH free radicals with increasing time of interactions (t) with ascorbic acid. A—amplitude of the EPR line of DPPH free radicals in contact with ascorbic acid. ADPPH—amplitude of the EPR line of DPPH free radicals in the reference solution. For the reference solution, the relative amplitude (A/ADPPH) take a value of 1.
