Effects of purple potato (PP) extract from Blue Congo (daily dose of 165 mg/kg b.w. for 14 days) on activity of antioxidant enzymes in leukocytes: (A) SOD, superoxide dismutase; (B) CAT, catalase; (C) GPx, glutathione peroxidase, (D) GSH, reduced glutathione. C—control group, C + PP—control rats receiving extract from Blue Congo, DM—diabetic group, DM + PP—diabetic rats treated with Blue Congo extract. Data are presented as means ± SD. Significance was measured using one-way analysis of variance (ANOVA). Designations: * p < 0.05, ** p < 0.01 compared to the control group; ##
p < 0.01 compared to the DM group.