Results: Among the endophytes, endophytic fungus Aspergillus sp. from Trigonella
foenum-graecum seeds demonstrated the highest both total phenolic content in term of
gallic acid equivalent [(89.9 ± 7.1) mg GAE/g] and antioxidant activity for 1,1-diphenyl-
2-picrylhydrazyl radical scavenging assay [IC50: (18.0 ± 0.1) mg/mL]. A high positive
linear correlation (R2 = 0.999 1) was found between total antioxidant capacity and total
phenolic content of endophytic fungi isolated from Vernonia amygdalina.