3.3.1. DPPH Radical Scavenging Activity

The highest inhibition concentration of radical scavenging activity of the extract was found to be 56.55 ± 3.1%, as compared to the trolox that was found to be 74.73 ± 1.13%. The IC50 value for DPPH radical scavenging activity of the extract was 0.86 mg (Table 2).


**Table 2.** Radical scavenging activity of ethyl acetate extract of *Streptomyces* sp.S2A.
