. 2020 Mar 3;10:3892. doi: 10.1038/s41598-020-60252-7

Table 5.

The correlation coefficient for antioxidant leaf pigments, beta-carotene, vitamin C, TPC, TFC, TAC (DPPH) and TAC (ABTS⁺) in17 stem amaranth genotypes.

Traits	Chl b (mg 100 g⁻¹ FW)	Chl ab (mg 100 g⁻¹ FW)	Beta cyanin (µg 100 g⁻¹ FW)	Beta xanthin (µg 100 g⁻¹ FW)	Betalain (µg 100 g⁻¹ FW)	Total catonenoirds (µg g⁻¹ FW)	Beta carotene (µg g⁻¹ FW)	Vitamin C (µg g⁻¹ FW)	TPC (GAE µg g⁻¹ DW)	TFC (RE µg g⁻¹ DW)	TAC (TEAC µg g⁻¹ DW)	TAC (ABTS⁺) (TEAC µg g⁻¹ DW)
Chlorophyll a (mg 100 g⁻¹ FW)	0.75**	0.82**	0.76**	0.78**	0.77**	−0.56**	−0.48**	−0.02	0.75**	0.64**	0.58**	0.83**
Chlorophyll b (mg 100 g⁻¹ FW)		0.86**	0.80**	0.75**	0.72**	−0.72**	−0.67**	−0.04	0.74**	0.65**	0.63**	0.67**
Chlorophyll ab (mg 100 g⁻¹ FW)			0.82**	0.74**	0.84**	−0.77**	−0.66**	−0.04	0.77**	0.46**	0.77**	0.83**
Betacyanin (µg 100 g⁻¹ FW)				0.88**	0.89**	−0.79**	−0.69**	−0.13	0.73**	0.65**	0.71**	0.78**
Betaxanthin (µg 100 g⁻¹ FW)					0.87**	−0.76**	−0.72**	−0.14	0.71**	0.64**	0.70**	0.78**
Betalain (µg 100 g⁻¹ FW)						−0.87**	−0.73**	−0.16	0.72**	0.74**	0.71**	0.85**
Total catonenoirds (µg g⁻¹ FW)							0.88**	−0.16	0.84**	0.68**	0.78**	0.95**
Betacarotene (µg g⁻¹ FW)								−0.15	0.69*	0.74**	0.67**	0.64**
Vitamin C (µg g⁻¹ FW)									0.68**	0.65**	0.69**	0.76**
TPC (GAE µg g⁻¹ DW)										0.78**	0.76**	0.96**
TFC (RE µg g⁻¹ DW)											0.84**	0.89**
TAC (DPPH) (TEAC µg g⁻¹ DW)												0.95**

Chl a, Chlorophyll a; Chl ab, Chlorophyl ab; TAC, Total antioxidant capacity; TPC, Total polyphenol content; TFC, Total flavonoid content; **Significant at 1% level.