Table 6. Antioxidant activity of the nitrogen stressed promising algal species using DPPH and ABTS radicals (%).

Treatment	Oscillatoria sp.		Nostoc muscorum
	DPPH	ABTS	DPPH	ABTS
Control (1.5 g/L NaNO3)	59.80±0.95	69.80±1.45	69.80±1.22	72.60
3 g/L	60.20±1.58	70.00±0.95	70.60±1.00	75.30±2.30
6	61.50±0.88	71.60±0.63	70.20±0.98	76.10±3.00
9	68.00±3.60	73.60±2.80	72.90±0.51	80.30±1.65
0.75	60.30±1.50	69.80±4.31	71.50±0.64	70.00±0.58
0.37	62.50±2.45	73.60±2.55	70.00±1.60	74.30±0.47
0.0	66.80±1.67	73.00±1.60	74.00±2.78	76.80±0.61
LSD 0.05	0.968	0.956	0.987	1.001

Each value is presented as mean of triplet treatments, LSD: Least different significantly at P≤ 0.05 according to Duncan's multiple range test.