In vitro antioxidant activity of MOLE and MOLM extracts. (a) DPPH radical scavenging activity; (b) NO scavenging activity; and (c) total antioxidant capacity of varying gradient Moringa oleifera leaves extracts (MOLE) (0.5%, 1.0%, and 1.5% w/v) and Moringa oleifera leaves meal (MOLM) extracts (0%, 0.5%, 1.0%, and 1.5% w/w) with/without nutritional feed at different concentrations (10–500 μg/mL) were determined spectrophotometrically at 540 nm, 540 nm, and 630 nm respectively. Results are means ± SD of three duplicate measurements. (DPPH: 1,1-diphenyl-2-picryl-hydrazyl free radical; NO: Nitric oxide free radical). In (a) and (b), the control compared to gradient extract with or without nutritional feed is statistically significant (P < 0.05). In (c), *
P < 0.05 compared to only nutritional feed and #
P < 0.05 compared to other gradient extracts.