. 2012 Feb 6;6:12. doi: 10.1186/1752-153X-6-12

Table 3.

Correlations between the IC₅₀values of antioxidant activities, phenolics and flavonoids content of S.asper

Assays (IC₅₀μg/ml)	Correlations R²
	Phenolics	Flavonoids
DPPH	0.9762^b	0.8843^b
Iron chelating assay	0.8101^b	0.7657^a
Super oxide radical scavenging	0.6987^a	0.6765^b
Hydrogen peroxide scavenging assay	0.1223	0.1056
Hydroxyl radical scavenging activity	0.2003	0.2060
ABTS⁺radical scavenging assay	0.8821^b	0.7797^a

S.asper methanolic extract and its soluble fractions were used in the correlation. a, b indicate significance at P < 0.05 and P < 0.01 respectively