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Journal of Genetic Engineering and Biotechnology

Table 4 Antioxidant activities demonstrated by Streptomyces sp. NMF6 extract expressed as ascorbic acid equivalents

From: Isolation and characterization of marine sponge–associated Streptomyces sp. NMF6 strain producing secondary metabolite(s) possessing antimicrobial, antioxidant, anticancer, and antiviral activities

Sample mass (μg)

*Ascorbic acid equivalent (μg)

DPPH assay

Phosphomolybdenum assay

Ferric-reducing power assay

25

3.37 ± 0.28

2.36 ± 0.19

1.91 ± 0.14

50

5.84 ± 0.29

4.10 ± 0.04

2.79 ± 0.23

75

7.96 ± 0.10

5.28 ± 0.30

3.98 ± 0.22

100

9.63 ± 0.08

6.22 ± 0.02

5.13 ± 0.12

125

10.78 ± 0.05

7.32 ± 0.07

6.53 ± 0.12

150

11.83 ± 0.14

7.70 ± 0.03

7.67 ± 0.15

  1. *Data are expressed as mean ± standard deviation (n = 3)
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