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Four endophytic fungi have been tested for antioxidant properties using different assays; DPPH radicalscavenging activity, ferric reducing antioxidant power (FRAP) and ferrous ion chelating activity (FCA). The test of polyphenolic content also has been done for both total phenolic content (TPC) and total flavonoid content (TFC). There was no result on the half maximal concentration (IC50) for both DPPH and FCA assays for all fungi. However, through FRAP assays the results were ranged from 0.336±0.01 to 0.477±0.11 mmol Fe/g extract where N. sphaerica had the highest result. This fungus also showed the highest results on TPC and TFC, which were 0.030±0.000 (mg GAE/g) and 0.038±0.001 (mg QE/g) respectively.

Antioxidants and Phytochemical Analysis of Endophytic Fungi Isolated from a Medicinal Plant Catharanthus roseus