Table 1. In vitro antioxidant activity (DPPH test) of PE

PE (μg/mL)	Radical scavenging activity (% RSA)	IC50 (μg/mL)
44.6	8.29±0.54
222.90	23.80±1.47
446.45	75.65±2.29
		318.15

DPPH, 2,2-diphenyl-1-picrylhydrazyl; PE, papaya fruit peel extracts.