Enzyme Inhibitory Properties, Antioxidant Activities, and Phytochemical Profile of Three Medicinal Plants from Turkey

Table 2

Reducing power, metal chelation activity, and radical scavenging potential of the plant extracts.

Plant extracts/positive controls	IC50 (mg/mL)				EC50 (mg/mL)
	DPPH^•	ABTS^•+	Metal chelating	-Carotene/linoleic acid bleaching activity	TAC	CUPRAC	FRAP
HvEA	6.27 ± 1.523	11.81 ± 0.682	NA	1.07 ± 0.006	1.18 ± 0.013	3.01 ± 0.279	1.98 ± 0.107
HvMeOH	0.30 ± 0.005	2.75 ± 0.004	51.54 ± 4.795	1.10 ± 0.009	1.54 ± 0.045	0.69 ± 0.031	0.44 ± 0.007
HvAq	0.35 ± 0.014	1.50 ± 0.039	1.40 ± 0.010	1.10 ± 0.006	2.85 ± 0.001	0.80 ± 0.008	0.43 ± 0.007
OhEA	0.31 ± 0.003	1.20 ± 0.007	NA	1.14 ± 0.008	0.90 ± 0.014	0.81 ± 0.021	0.34 ± 0.005
OhMeOH	0.29 ± 0.002	1.27 ± 0.007	47.27 ± 1.255	1.12 ± 0.070	1.09 ± 0.021	0.89 ± 0.056	0.39 ± 0.003
OhAq	0.27 ± 0.001	1.22 ± 0.014	16.79 ± 0.456	1.06 ± 0.007	1.44 ± 0.101	0.80 ± 0.011	0.37 ± 0.004
VtEA	1.15 ± 0.002	5.91 ± 0.083	10.80 ± 1.453	1.05 ± 0.001	1.13 ± 0.004	1.58 ± 0.276	1.33 ± 0.061
VtMeOH	0.84 ± 0.060	6.23 ± 0.035	32.35 ± 2.493	1.12 ± 0.008	2.48 ± 0.035	1.44 ± 0.098	1.16 ± 0.026
VtAq	0.47 ± 0.004	5.50 ± 0.252	20.62 ± 0.060	1.12 ± 0.003	3.35 ± 0.008	1.13 ± 0.015	0.65 ± 0.009
Trolox	0.31 ± 0.003	0.18 ± 0.004	ND	1.10 ± 0.004	0.59 ± 0.006	0.11 ± 0.008	0.05 ± 0.003
EDTA	ND	ND	0.04 ± 0.001	ND	ND	ND	ND

Hv: Hedysarum varium; Oh: Onobrychis hypargyrea; Vt: Vicia truncatula; EA: ethyl acetate extract; MeOH: methanolic extract; Aq: aqueous extract. Values significantly () lower than the positive control. Values significantly () higher than the positive control. NA: not active; ND: not determined.