Correlation between antibutyrylcholinesterasic and antioxidant activities of three aqueous extracts from Tunisian Rhus pentaphyllum

Table 5 Concentration-dependent ABTS^.+free radical scavenging activity of Rhus pentaphyllum aqueous extracts and standard antioxidant Trolox

Extracts	Concentration (mg/ml)	Inhibition (%)	TEAC (mM)	IC₅₀ (mg/ml)
Seeds aqueous extract	0.5	76.4 ± 3.50*	2.19	0.25
	2.5	86.12 ± 4.25**
	4.5	98.77 ± 6.50**
	7.5	100 ± 1.00***
	9.5	100 ± 1.50***
Leaves aqueous extract	0.5	61.7 ± 3.50*	1.54	0.37
	2.5	87.8 ± 4.40**
	4.5	89 ± 1.00**
	7.5	98 ± 0.50**
	9.5	100 ± 2.50***
Roots aqueous extract	0.5	44.1 ± 0.35	1.32	2.31
	2.5	54 ± 1.10*
	4.5	67.13 ± 3.10*
	7.5	78.61 ± 5.10*
	9.5	86.50 ± 2.35**
^(a) Trolox	0.5	22.07 ± 0.25	-	0.76
	0.625	32.21 ± 0.50
	0.833	53.84 ± 1.50
	1.25	65 ± 2.50
	2.5	96.85 ± 2.80**

TEAC: Trolox equivalent antioxidant capacity
Significant difference obtained with: *P < 0.05; **P < 0.01; ***P < 0.001
The reported comparisons concern: Seeds aqueous extract versus roots aqueous extract, leaves aqueous extract versus roots aqueous extract and control^(a) versus roots aqueous extract. Every concentration is compared with its equivalent in the other extract.

ISSN: 1476-0711