Chemical Constituents, Antioxidant, Cyclooxygenase Inhibitor, and Cytotoxic Activities of Teucrium pruinosum Boiss. Essential Oil

Table 3

Free radical scavenging activity and IC₅₀ values of T. pruinosum EO and Trolox.

Conc., (µg/ml)	% inhibition of DPPH by Trolox	±SD	% inhibition of DPPH by T. pruinosum EO	±SD
0	0	0	0	0
1	38.6	1.23	2.64	0.82
2	49.5	1.75	8.68	0.42
3	59.8	2.23	8.68	1.03
5	78.8	1.62	13.2	0.62
7	88	2.1	39.62	0.62
10	97.2	1.52	39.62	1.03
20	97.2	1.85	39.62	0.62
30	97.5	1.3	69.81	0.62
40	97.5	1.82	73.58	1.03
50	97.2	1.34	77.11	1.03
80	97.2	2.25	77.52	0.41
100	97.2	1.4	77.52	1.85
IC50 value, (µg/ml)	2.09	0.17	16.98	0.84