Total Phenolic Total flavonoid Catechin Epicatechin L a B TAC Superoxide FRAP DPPH Total Phenolics 1 0.59* 0.61** 0.21 -0.39 0.52* 0.491* 0.63** 0.20 0.70** 0.53* Total flavonoids 0.59* 1 0.58* 0.30 -0.12 0.42 0.581* 0.73** 0.34 0.73** 0.38 Catechin 0.61** 0.58* 1 0.38 0.27 0.22 0.659** 0.33 0.26 0.67** 0.04 Epicatechin 0.21 0.30 0.38 1 -0.16 -0.03 0.174 0.03 -0.12 0.21 -0.22 L -0.39 -0.12 0.27 -0.16 1 -0.54* 0.20 -0.37 0.01 -0.28 -0.52* A 0.52* 0.42 0.22 -0.03 -0.54* 1 0.207 0.70** 0.17 0.70** 0.57* B 0.49* 0.58* 0.66** 0.17 0.20 0.21 1 0.61* 0.26 0.56* -0.01 TAC 0.63** 0.73** 0.33 0.03 -0.37 0.70** 0.61* 1 0.17 0.75** 0.43 Superoxide 0.20 0.34 0.26 -0.12 0.01 0.17 0.259 0.17 1 0.41 0.46 FRAP 0.70** 0.73** 0.67** 0.21 -0.28 0.70** 0.562* 0.75** 0.41 1 0.49* DPPH 0.53* 0.38 0.04 -0.22 -0.52* 0.57* -0.011 0.43 0.46 0.49* 1

*Spearman’s correlation coefficients were calculated. Statistical significance set at p<0.05, *p<0.05, **p<0.01, ***p<0.001

Table 6: Correlations between phenolics, flavonoids, catechin, epicatechin, antioxidant capacity and color among 18 varieties of date seeds.*