. 2014 Mar 3;2014:418690. doi: 10.1155/2014/418690

Table 4.

Antioxidant activity (%).

	Concentration, mg/L					Scavenging activity
	25	50	100	200	500	Scavenging activity
DPPH	29.85 ± 0.86^a	31.75 ± 1.41^a	40.88 ± 1.15^b	47.63 ± 1.93^c	71.44 ± 1.04^d	229.19 ± 22.34^A
ABTS	12.25 ± 0.67^a	19.76 ± 0.63^b	32.38 ± 0.46^c	53.83 ± 0.27^d	88.13 ± 0.73^e	180.94 ± 3.48^A
RP	0.091 ± 0.001^a	0.108 ± 0.002^b	0.132 ± 0.002^c	0.178 ± 0.001^d	0.328 ± 0.001^e	443.60 ± 4.01^B

Assay wavelength: 1,1-diphenyl-2-picrylhydrazyl (DPPH) = 517 nm and 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) = 414 nm, and reducing power (RP) = 700 nm.

Butylated hydroxytoluene (BHT) EC₅₀; DPPH: 121.85 ± 0.39 mg/L; ABTS: 93.85 ± 0.43 mg/L; RP: 26.71 ± 0.69 mg/L.

Each value represents mean ± standard deviation (SD), n = 5.

^a–eMeans with different superscripts in the row are significantly different at P < 0.05.

^AEC₅₀(mg/L) values were calculated from the calibration curves using five different concentrations (25–500 mg/L) in quintuplicate and their data were presented as 50% scavenging activity.

^BRP value (EC_0.3) was reducing activity calculated from the calibration curves using five different concentrations (25–500 mg/L) in quintuplicate.