Fig. 6From: Ultrasound-assisted extraction (UAE) of antioxidant phenolics from Corchorus olitorius leaves: a response surface optimizationAntioxidant activity of C. olitorius extracts. a Radical scavenging activity of 1,1-diphenyl-2-picrylhydrazyl (DPPH•), b Radical scavenging activity of ABTS+•, and c Hydroxyl radical scavenging activity. Results were presented as average values ± standard errorBack to article page