Table 1.

Betulinic acid, total phenols, flavonoids content of B. etnensis extract mg/g of extract; scavenger effect of extract on superoxide anion expressed as percentage of inhibition of NADH oxidation (rate of superoxide anion production was 4 nmoles/minutes), and as the capacity to bleach DPPH.

Sample	Betulinic Acid (mg/mL)	Total Phenolic Gallic Acid (mg/g)	Total Flavonoids Catechin (mg/g)	SOD-like Activity IC50 (μg/mL)	DPPH Test IC50 (μg/mL)
B. etnensis extract	0.069 ± 0.007	57.30 ± 0.83	6.11 ± 0.17	0.51 ± 0.80	48.35 ± 1.7
Positive control SOD				50 mU ± 0.85
Trolox					15 mM ± 0.62