查看文章

Objective:

The primary objective of this study was to compare the antioxidant levels and activities between flower and leaf extracts of Ferula gummosa Boiss. plant by different assay methods.

Method:

The antioxidant activity of flower and leaf extracts of F. gummosa Boiss. was assessed usingferric-reducing antioxidant power (FRAP), 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and oxygen radical absorbance capacity (ORAC) assay. In addition, phenolic content of the extracts was measured byFolin-Ciocalteu (FC) method.

Results:

Ferric reducing antioxidant power assay showed that leaf extract has more antioxidant activity compared to flower extract. DPPH assay had similar results. A slow kinetic behavior was found for methanol extracts of both tissues (EC 50 of 0.21 mg/mL and 0.25 mg/mL for leaf and flower methanol extracts, respectively) which was estimated by kinetic mode of DPPH assay …