Table 4.

Antioxidant activity (%) of different extracts from Enteromorpha compressa using DPPH method after 60 min at 100–200 μg/mL.

Extracts	Seasons								LSD
	Spring		Summer		Autumn		Winter
	Conc. (μg/mL)
	100	200	100	200	100	200	100	200
Crude (Ethanolic extract)	46 ± 4.5	55.7 ± 6.9	47 ± 7.0	50.7 ± 4.7	50.66 ± 2.6	55.03 ± 2.7	41.5 ± 2.6	44.7 ± 1.6	0.0325
Pet. ether	63 ± 2.0	69 ± 4.3	50.7 ± 3.2	54.3 ± 6.3	45.88 ± 1.4	54.24 ± 1.3	49.1 ± 1.5	52 ± 3.6	0.0325
Chloroform	75.5 ± 2.6	82 ± 4.5	44 ± 4.5	48 ± 2.5	59.3 ± 1.0	65.12 ± 6.2	40.2 ± 3.6	44.4 ± 2.7	0.0325
Ethyl acetate	79.5 ± 1.6	95.7 ± 1.6	44.3 ± 5.3	48.5 ± 8.6	34.6 ± 3.2	45.75 ± 0.9	49.1 ± 2.5	52.7 ± 1.0	0.0325
Water	90 ± 4.6	95.4 ± 4.8	45.5 ± 4.6	50 ± 2.5	49.6 ± 1.8	50.66 ± 2.5	40.7 ± 1.3	44 ± 4.6	0.0861
BHT	83 ± 4.6	88 ± 4.8	83 ± 6.8	88 ± 3.2	85.4 ± 2.9	88.85 ± 7.0	83 ± 1.5	88 ± 2.6	0.0325
LSD	0.0262	0.0262	0.0262	0.0262	0.0642	0.05132	0.0262	0.0262

Each value is presented as mean of triplet treatments; LSD: Least significant difference at P ≤ 0.01 according to Duncan's multiple range test.