In Vitro Ion Chelating, Antioxidative Mechanism of Extracts from Fruits and Barks of Tetrapleura tetraptera and Their Protective Effects against Fenton Mediated Toxicity of Metal Ions on Liver Homogenates

Table 3

Different values of IC₅₀ of the plant extracts on the different radicals tested.

Samples tests	IC50 (g/mL)
	DPPH	OH	NO	ABTS
CEH	84.60 ± 0.07^a	96.07 ± 2.01^a	195.18 ± 3.01^a	132.34 ± 2.36^a
CFH	31.06 ± 1.57^b	69.11 ± 1.33^b	80.15 ± 2.22^b	102.15 ± 4.01^b
CEE	99.37 ± 2.66^c	102.72 ± 3.02^c	131.88 ± 2.99^c	178.54 ± 2.99^c
CFE	153.12 ± 2.22^d	108.69 ± 2.00^d	137.26 ± 2.11^d	168.34 ± 2.43^d
VIT C	2.55 ± 1.31^e	27.76 ± 1.66^e	55.84 ± 2.96^e	68.17 ± 2.12^e

Values are expressed as mean ± SD of three replicates. In the same concentration the values affected with different letter are significantly different at ; CEH: T. tetraptera hydroethanolic extract (bark); CFH: T. tetraptera hydroethanolic extract (fruit); CEE: T. tetraptera ethanolic extract (bark); CFE: T. tetraptera ethanolic extract (fruit); VIT C = vitamin C.