Figure 3. Reaction scheme between the stable 1,1-diphenyl-2-picryl-hydrazyl (DPPH•) radical and an antioxidant (AOH) through hydrogen atom transfer mechanism. Products are 1,1-diphenyl-2-picryl-hydrazine (DPPH-H) and the oxidized form of AO (AO•)

From

Relationship between Antioxidant Capacity and Food Chemistry

Caroline Gaucher, Pierre Leroy, Ariane Boudier

World Journal of Chemical Education. 2017, 5(2), 78-85 doi:10.12691/wjce-5-2-7