Table 2. Quantitative total phenolic, total flavonoid and antioxidant activity (DPPH %) of neem leaf aqueous extract at different concentrations (500–1,000–1,500–2,000 µg/mL).

Parameters	Neem variants
TPCs (mg GAE g−1 dry)	119.00 ± 1.3a
TFs (mg QE g−1 dry extract)	45.67 ± 0.95b
Antioxidant activity (%)	% Inhibition
500	31.67 ± 0.25d
1,000	46.76 ± 0.87c
1,500	65.33 ± 1.09b
2,000	77.83 ± 2.11a

Notes.

Different letter in the same row indicates significant difference (p > 0.05).

mg GAE g-1

mg gallic acid equivalents per g dry weight

mg EQ g-1

mg Quercetin equivalents per g dry weight

% Inhibition

Inhibition of DPPH radical