2.5. Evaluation of antioxidant activity of Senjed peel aqueous
extracts
The 1, 1-diphenyl-2-picrylhydrazyl (DPPH) assay was performed according
to Hussain et al. (2018). The obtained extracts and the synthetic
antioxidant TBHQ (0.1 mL of each) was allowed to react with 3.9 mL of
DPPH solution (6 × 10-5 M) and absorbance was measured
at 515 nm after 30 min. The DPPH scavenging percentage was calculated
according to the following formula.
\(\text{DPPHs\ Scavenging\ capacity\ }\left(\%\right)=\ \frac{A_{\text{control}}-\ A_{\text{sample}}}{A_{\text{control}}}\ \times 100\)(1)
A = absorbance at 515 nm.