Table 3. Hydroxyl radical scavenging activity of plant extracts.

Plant extract	% Hydroxyl radical scavenging activity
AA = 77.52±0.39	Petroleum ether	Ethyl acetate	Methanol	Ethanol (70% v/v)
G.glauca
Flower	46.50±1.43	77.01±0.65	78.16±0.96*	74.69±0.72
Leaf	44.77±1.03	77.97±1.20	81.25±0.34*	77.46±0.22
Stem	41.30±0.72	70.58±1.19	74.69±0.61*	72.83±0.51
D.bulbifera
Bulb	44.51±0.49	66.67±0.73	76.11±1.26*	64.23±1.25

AA = Ascorbic acid; the data is indicated as the mean ± SEM; [n = 3]. Data with asterisk (*) shows significant difference (P<0.05), two-tailed student t-test.