FIGURE 2.

Diagram of antioxidant activity (a) and antitumor activity (b) of beetroot. DPPH, 2,2diphenyl‐1‐picrylhydrazyl; Nrf2, nuclear factor (erythroid‐derived 2)‐like 2; HO‐1, Heme oxygenase; GSH, glutathione; PON1, paraoxonase 1; NF‐κB, nuclear factor‐kappa B; LDL, low‐density lipoprotein; TPA, 12‐O‐tetradecanoylphorbol‐13‐acetate; DMBA, 7,12‐dimethylbenz‐(a)anthracene; NOR‐1, (±)‐(E)‐4‐methyl‐2‐[(E)‐hydroxyamino]‐5‐nitro‐6‐methoxy‐3‐hexanamide; DEN, N‐nitrosodiethylamine; TRAILR4, tumor necrosis factor‐related apoptosis‐inducing ligand 4; FAS, factor associated suicide; ROS, reactive oxygen species; CAS3, caspase‐3; CAS7, caspase‐7; CAS9, caspase‐9; PARP, poly ADP‐ribose polymerase