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Table 3 The antioxidant activities demonstrated by Streptomyces sp. MUM265 extract and positive controls in different antioxidant assays

From: Mangrove derived Streptomyces sp. MUM265 as a potential source of antioxidant and anticolon-cancer agents

Concentration of extract / positive controls (μg/mL) Antioxidant activities
DPPH radical scavenging activity (%) ABTS radical scavenging activity (%) Superoxide dismutase-like activity (%) Metal-chelating activity (%)
MUM265 extract
 62.5 NDa 5.31 ± 2.21 9.73 ± 5.72* 12.57 ± 2.10*
 125 NDa 9.40 ± 3.17* 16.84 ± 4.48* 18.55 ± 1.13*
 250 1.22 ± 1.47 16.42 ± 4.20* 17.67 ± 2.52* 22.53 ± 0.70*
 500 9.43 ± 1.58* 24.29 ± 4.01* 24.20 ± 1.98* 24.32 ± 3.56*
 1000 24.70 ± 3.12* 46.56 ± 4.95* 28.59 ± 1.79* 28.86 ± 6.27*
 2000 33.69 ± 3.36* 59.13 ± 6.14* 37.25 ± 0.21* 34.06 ± 1.28*
 4000 42.33 ± 3.98* 88.50 ± 0.37* 55.99 ± 1.03* 46.02 ± 0.86*
Gallic acid
 6.25 32.13 ± 5.48*
 12.5 85.77 ± 4.50*
Catechin
 0.3 52.27 ± 6.27*
EDTA
 62.5 53.32 ± 4.57*
  1. *statistically significance (P < 0.05) when compared to control (without extract)
  2. aND not detected