Antioxidant Activities of Streptomyces sp. strain MUSC 14 from Mangrove Forest Soil in Malaysia

Table 3

The antioxidant activities of extract MUSC 14 at different antioxidant assay.

Concentration (mg/mL)	Antioxidant activities (%)
	DPPH radical scavenging activity (%)	ABTS radical scavenging activity (%)	Metal chelating activity (%)
0.125	2.74 ± 1.40	5.40 ± 0.36	22.86 ± 0.60
0.25	2.38 ± 1.80	5.76 ± 0.89	20.94 ± 2.54
0.5	7.16 ± 1.58	9.23 ± 0.66	23.57 ± 1.39
1	11.88 ± 2.92	15.29 ± 1.27	30.83 ± 1.72
2	28.14 ± 2.80	28.36 ± 4.72	37.70 ± 2.03
4	24.71 ± 2.22	62.71 ± 3.30	55.82 ± 2.35
Gallic acid^a	53.99 ± 4.06	—	—
Gallic acid^b	—	42.50 ± 0.60	—
EDTA^c	—	—	68.49 ± 7.68

Statistically significant at . ^aActivity of gallic acid at 10 μg/mL. ^bActivity of gallic acid at 12.5 μg/mL. ^cActivity of EDTA at 0.125 mg/mL.