Table 1. Antioxidant Activity Results of Pistacia vera Crude Extract.

Samples Concentration (µg/mL)	DPPH Radical Scavenging Activity (Mean% ± Standard Deviation)	Metal Chelating Capacity (Mean% ± Standard Deviation)	Ferric-Reducing Power (Absorbance ± Standard Deviation)
Pistacia vera extract
250	90.51 ± 0.40***	6.54 ± 1.26ns	1.597 ± 0.090***
500	90.34 ± 0.77***	13.51 ± 1.27***	2.961 ± 0.050***
1000	88.93 ± 1.38***	22.76 ± 3.02***	3.928 ± 0.000***
2000	87.44 ± 0.55***	34.51 ± 1.34***	3.915 ± 0.000***
References
250	91.61 ± 0.15 a***	99.69 ± 0.18 b***	3.774 ± 0.170 c***
500	90.34 ± 0.77 a***	99.88 ± 0.36 b***	3.934 ± 0.000 c***
1000	91.35 ± 0.20 a***	100.03 ± 0.24 b***	3.940 ± 0.000 c***
2000	91.17 ± 0.57 a***	100.00 ± 0.13 b***	3.941 ± 0.000 c***

Abbreviations: DPPH, 2,2-diphenyl-1-picrylhydrazyl; ns, not significant.

^a Ascorbic acid

^b EDTA

^c Quercetin