. 2018 Aug 17;8:12349. doi: 10.1038/s41598-018-30897-6

Table 4.

Correlation coefficient for antioxidant leaf pigments, vitamins, TPC, TFC and TAC in selected A. tricolor genotype.

	β-xanthin (ng g⁻¹)	Betalain (ng g⁻¹)	Total carotenoids (mg 100 g⁻¹)	β-carotene (mg g⁻¹)	Vitamin C (mg 100 g⁻¹)	TPC (GAE µg g⁻¹ dw	TFC (RE µg g⁻¹ dw)	TAC (DPPH) (TEAC µg g⁻¹ dw)	TAC (ABTS⁺) (TEAC µg g⁻¹ dw)
β-cyanin	0.96**	0.95**	0.32	0.37	0.18	0.87**	−0.65	0.87**	0.75*
β-xanthin		0.76*	0.24	0.42	0.14	0.88**	−0.47	0.82**	0.77*
Betalain			0.29	0.48	0.12	0.88**	−0.49	0.88**	0.82*
T carotenoids				0.92**	0.95**	0.53	0.67*	0.74*	0.96**
β-carotene					0.98**	0.68*	0.72*	0.83**	0.92**
Vitamin C						0.32	0.35	0.82*	0.88*
TPC							0. 78*	0.98**	0.84**
TFC								0.87**	0.89**
TAC (DPPH)									0.97**

T carotenoids, Total carotenoids; TPC, Total polyphenol content (GAE µg g⁻¹ dw); TFC, Total flavonoid content (RE µg g⁻¹ dw); TAC (DPPH), Total antioxidant capacity (DPPH) (TEAC µg g⁻¹ dw); TAC (ABTS⁺), Total antioxidant capacity (ABTS⁺) (TEAC µg g⁻¹ dw); *significant at 5% level, **significant at 1% level, (n = 6).