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 4

Correlation between free radicals scavenging properties and the determination of polyphenols compounds.

	DPPH	OH	NO	ABTS	RED ACT	FRAP	Molybdate	Polyphenol	Flavonoid	Flavonol
DPPH	1
OH	0.955	1
NO	0.850	0.787	1
ABTS	0.676	0.769	0.745	1
RED ACT	0.843	0.932	0.742	0.887	1
FRAP	0.876	0.920	0.777	0.822	0.947	1
Molybdate	0.861	0.902	0.869	0.927	0.926	0.929	1
Polyphenol	0.829	0.865	0.876	0.879	0.886	0.928	0.977	1
Flavonoid	0.876	0.931	0.817	0.780	0.923	0.943	0.915	0.942	1
Flavonol	0.871	0.921	0.750	0.656	0.877	0.894	0.822	0.854	0.978	1

Significant values (bilateral test).
Molybdate: phosphomolybdenum test; flavonols: flavonol assay; polyphenol: polyphenol assay; flavonoids: flavonoid assay; NO: NO radical scavenging test; ABTS: ABTS radical scavenging test; DPPH: DPPH radical scavenging test; OH: OH radical scavenging test; RED ACT: reductive activity test.