. 2015 Apr 23;16(5):9217–9235. doi: 10.3390/ijms16059217

Table 1.

Anti-oxidant activity of E. ferox seed ethyl acetate fraction (Efse-EA) in various in vitro assay systems.

Compound	Concentration (µg/mL)	DPPH ⁽¹⁾	FRAP ⁽²⁾	CUPRAC ⁽³⁾	ABTS ⁽⁴⁾
Compound	Concentration (µg/mL)	Activity (% of Control)
Ascorbic acid	1	4.5 ± 0.011 ⁽⁵⁾	12.7 ± 0.002 **	12.2 ± 0.001	−1.7 ± 0.002
	3	8.5 ± 0.016 **^,(6)	52.5 ± 0.001 **	42.7 ± 0.001 **	2.7 ± 0.001 **
	10	18.5 ± 0.054 *	170.8 ± 0.006 **	147.8 ± 0.001 **	18.1 ± 0.003 **
	30	57.3 ± 0.069 **	523.3 ± 0.026 **	119.2 ± 0.002 **	57.9 ± 0.008 **
Efse-EA	1	0.6 ± 0.002	19.9 ± 0.003 **	12.8 ± 0.003 *	5.2 ± 0.001 **
	3	7.9 ± 0.012	82.0 ± 0.009 **	54.3 ± 0.009 **	18.6 ± 0.013 *
	10	28.1 ± 0.006 **	234.4 ± 0.027 **	251.9 ± 0.029 **	55.1 ± 0.024 *
	30	78.0 ± 0.021 **	820.4 ± 0.065 **	669.6 ± 0.043 **	89.7 ± 0.001 *

⁽¹⁾ 1,1-Diphenyl-2-picrylhydrazyl radical scavenging assay; ⁽²⁾ Ferric reducing antioxidant power assay; ⁽³⁾ Cupric(II) ion reducing antioxidant capacity assay; ⁽⁴⁾ 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical scavenging activity assay; ⁽⁵⁾ Values are expressed as mean ± SD of triplicate determinations; ⁽⁶⁾ Data was considered to indicate statistical significance (* p < 0.05, ** p < 0.01) by means of the student t-test).