Table 6.

Correlation and regression analysis of the biochemical assays

Assays	R2	Pearson r	Significance
Between WPC and antioxidant activity
WPC versus FRAP	0.6564	0.8102	***
WPC versus TEAC	0.4401	0.6634	***
WPC versus DPPH	0.6755	0.8219	***
Between TFC and antioxidant activity
TFC versus FRAP	0.5199	0.7210	***
TFC versus TEAC	0.2765	0.5258	***
TFC versus DPPH	0.4969	0.7049	***
Between L-AA and antioxidant activity
FRASC versus FRAP	0.3755	0.6128	***
FRASC versus TEAC	0.0914	0.3023	*
FRASC versus DPPH	0.4220	0.6496	***
Between reducing power and radical scavenging activity
FRAP versus TEAC	0.5146	0.7174	***
FRAP versus DPPH	0.8689	0.9321	***
Between two radical scavenging activities
TEAC versus DPPH	0.5929	0.7700	***
Between WPC and flavonoids
WPC versus TFC	0.5644	0.7513	***

Seventy paired mean samples from each assay were used in the comparison

The R² value denotes the regression value and the r value denotes the Pearson’s correlation value

The level of significance was expressed as * p < 0.05; *** p < 0.001