Antimutagenic and free radical scavenger effects of leaf extracts from Accacia salicina

Table 3 TEAC of ABTS radical formation by Acaccia salicina leaf extracts

Extracts ^b	Concentrations (mg/mL)	Inhibition percentage ^a (%)	IC₅₀ (mg/mL)	TEAC values mM
	0.05	1.86 ± 1.11
PE extract	0.5	10. 5 ± 2.23
	2.5	16.7 ± 2.36	-	0.24 ± .008
	4.5	28 ± 1.11
	7.5	41.5* ± 2.18
	0.05	2.52 ± 2.03
Chl extract	0.5	19.2 ± 2.53	1.91 ± 0.08	0.81 ± 0.007
	2.5	57.8* ± 2.81
	4.5	72.20* ± 3.82
	7.5	91* ± 1.65
	0.05	5.52 ± 2.06
EA extract	0.5	28 ± 1.68
	2.5	90. 2* ± 2. 12	1.2 ± 0.04	0.95 ± 0.004
	4.5	99.28* ± 1.92
	7.5	100
TRolox ^c			0.26 ± 0.03	1

^a Inhibition of absorbance at 734 nm relative to that of standart ABTS solution
^b Values were expressed as means ± standard deviation of three experiments
^c positive control
* P < 0.05 compared to negative control without the tested extract by ANOVA followed by student test.

ISSN: 1476-0711