Antioxidant Property of Aerial Parts and Root of Phyllanthus fraternus Webster, an Important Medicinal Plant

Table 2

Superoxide radical scavenging activity of P. fraternus aqueous and ethanolic extracts of aerial part and root.

Aerial part			Root
Concentration (µg/mL)	Aqueous extract	Ethanol extract	Concentration (µg/mL)	Aqueous extract	Ethanol extract
	Percentage inhibition; (mean ± SE)	Percentage inhibition; (mean ± SE)		Percentage inhibition; (mean ± SE)	Percentage inhibition; (mean ± SE)
20	1.81±0.32	6.64±1.53	50	14.08±0.93^∗∗	7.6±0.88^∗∗
40	48.04±0.86^∗∗	30.06±1.36^∗∗	100	17.73±0.10^∗∗	29.20±0.46^∗∗
60	64.51±0.32^∗∗	77.32±2.95^∗∗	200	24.27±1.21^∗∗	62.14±1.08^∗∗
80	80.32±0.46^∗∗	88.81±0.56^∗∗	400	49.78±0.51^∗∗	88.09±0.94^∗∗
100	99.98±0.03^∗∗	—	600	78.02±0.20^∗∗	95.55±0.48^∗∗
			800	93.72±0.49^∗∗	—
EC50	52	55	EC50	391	201

EC₅₀ of Copper sulphate is 4.18.
∗∗Significant at P < 0.001.