Table 4.

Pearson’s correlation coefficients of Hunter values, pigment contents and antioxidant activities.

Traits	TC	CA	PC	TP-C	TF-C	DPPH-C	ABTS-C	TP-P	DPPH-P	ABTS-P
L*	–0.12	–0.11	–0.28	–0.29	0.25	–0.01	–0.12	–0.09	–0.24	–0.25
a*	0.58 **	0.39	0.50 *	–0.12	0.13	0.42 *	0.22	0.66 **	0.39	0.68 **
b*	–0.32	–0.41 *	–0.54 **	–0.10	–0.15	–0.26	–0.24	–0.19	–0.21	–0.42 *
TC		0.92 **	0.86 **	–0.63 **	0.66 **	0.97 **	0.71 **	0.83 **	0.50 *	0.95 **
CA			0.94 **	–0.45 *	0.55 **	0.94 **	0.80 **	0.68 **	0.50 *	0.86 **
PC				–0.30	0.42 *	0.87 **	0.74 **	0.71 **	0.53 **	0.86 **
TP-C					–0.82 **	–0.63 **	–0.37	–0.40	–0.12	–0.57 **
TF-C						0.67 **	0.31	0.44 *	0.07	0.60 **
DPPH-C							0.77 **	0.80 **	0.52 **	0.90 **
ABTS-C								0.43 *	0.53 **	0.65 **
TP-P									0.55 **	0.83 **
DPPH-P										0.49 *

TC, total carotenoid content; CA, chlorophyll a content; PC, phycocyanin content; TP-C, total phenolic content in carotenoid extract; TF-C, total flavonoid content in carotenoid extract; DPPH-C, antioxidant activity of carotenoid extract on DPPH assay; ABTS-C, antioxidant activity of carotenoid extract on ABTS assay; TP-P, total phenolic content in C-PC extract; DPPH-P, antioxidant activity of C-PC extract on DPPH assay; ABTS-P, antioxidant activity of C-PC extract on ABTS assay. * Significant at p < 0.05. ** Significant at p < 0.01.