Table 5.

Antioxidant activities of Ferula drudeana extracts and standards.

Extracts/Compounds	DPPH [IC50, mg/mL] 2	TEAC 1 [mM] 1 mg/mL	TEAC [mM] 0.1 mg/mL
Fruit Methanolic Extract of F. drudeana	0.087 ± 0.011	0.41 ± 0.07	na 3
Root Methanolic Extract of F. drudeana	0.189 ± 0.048	0.25 ± 0.09	na
Chlorogenic acid 4	0.013 ± 0.001	2.94 ± 0.29	0.16 ± 0.07
Luteolin-7-glucoside 4	0.0073 ± 0.0005	3.02 ± 0.05	1.03 ± 0.02
Gallic acid 5	0.002 ± 0.0001	3.22 ± 0.02	3.24 ± 0.01
BHT 5	0.042 ± 0.008	3.16 ± 0.04	0.37 ± 0.05
Ascorbic acid 5	0.006 ± 0.001	3.24 ± 0.05	0.73 ± 0.07

¹ TEAC: Trolox equivalent antioxidant capacity; ² IC₅₀: 50% inhibition concentration; ³ na: not active; ⁴ standard; ⁵ positive control standard.