Table 1.

The antioxidant activities demonstrated by MUM256 extract in both DPPH assay and SOD activity assay.

Concentration of extract Streptomyces sp. MUM256 (μg/mL)	Antioxidant activities
	DPPH radical scavenging activity (%)	Superoxide dismutase activity (%)
125	ND	16.33 ± 2.89
250	ND	21.35 ± 2.41
500	ND	31.56 ± 4.25
1000	ND	46.45 ± 5.72
2000	6.69 ± 0.83	67.25 ± 8.82
4000	12.08 ± 1.05	NT

ND, not detected; NT, not tested.