Table 3: Pearson correlation coefficients () and level () of linear regression among different antioxidants and metabolites.

EvaluationTotal phenolsTotal flavonoidsTotal carotenoidsTotal chlorophyll

DPPH0.9440.00040.8420.00870.2730.50600.9400.0005
ABTS0.7830.02030.5860.02640.2910.48370.8730.0045
ORAC0.8700.00490.8150.00260.3540.38830.9010.0030

between 0.450 and 0.900 indicates a moderately strong correlation, and between 0.900 and 1.000 indicates a strong correlation between variables.