Table 2. DPPH Radical Scavenging, Reducing Power and Phenolic.

Sample a	IC50 (µg/ml), Mean  ± SD	Extract Concentration with Absorption 0.5 µg/ml, Mean ± SD	Total phenolic content mg/g, Mean ± SD
Gallic aicd	25.32 ± 5.59 A	10 ± 0.26	NA b
Verbascum Sinuatum L. var.	263.52 ± 5.98 B	85.08 ± 8.66	8.53 ± 0.11 A
Rosa damascena Mill.	287.9 ± 5.68 B	166.39 ± 10.13	2.63 ± 0.16 B
Ziziphora tenuir L.	884.4 ± 5.47 C	389.63 ± 6.65	5.27 ± 0.09 D
Stachys pilifera Benth.	535.4 ± 4.84 D	145.39 ± 0.19	2.76 ± 0.02 B
Tripleurospermum Disiforme	374.95 ± 6.26 E	197.44 ± 5.64	6.66 ± 0.19 E
Centaurea Depressa M.B.	> 1600 NA	513.05 ± 21.3	2.91 ± 1.02 NA
Salvia Macrosiphon Boiss.	> 1600 NA	392.79 ± 9.38	3.27 ± 0.02 NA
Chenopodium Foliosum (moench) Aschers.	546.88 ± 5.90 D	408 ± 5.44	2.6 ± 0.02 B
Phlomis Olivieri Benth.	397.26 ± 6.61 E	134.33 ± 8.16	6.85 ± 0.27 E
Onosma Rostellatum Lehm.	605.96 ± 5.41 F	219.98 ± 2.64	5.06 ± 0.12 D

^aConcentration of plant extract in absorbance 0.5. Statistical differences showed as alphabetic letters. The same alphabetic letters implied there are not any statistical differences P > 0.05 and different letters represented statistical differences P < 0.05

^bAbbreviations: NA, Non Active