Fig. 3

a Catalase activity. b Superoxide dismutase activity. c Glutathione level. d Glutathione peroxidase activity in subject serum. Bars represent mean ± SEM (n = 10). Values are statistically different at ^φp < 0.05, ^φφp < 0.01, ^φφφp < 0.001, ns versus NC and ^λp < 0.05, ^λλp < 0.01, ns versus G1, ^•p < 0.05, ^••p < 0.01 versus G2. NC: non-diabetic healthy group (positive control); G1: subjects that did not receive any test food (negative control); G2: subjects fed MBY (snack comprising 90% amaranth, 5% acha, 5% pearl millet); G3: subjects fed MBZ (snack comprising 47.98% amaranth, 26.68% acha, 25.34% pearl millet); G4: subjects fed COB (commercial oat snack), ns: no significant difference