Table 1.

Pearson’s correlation test between carotenoid content (mg g⁻¹ DW) and antioxidant activity measured with ORAC assay (µg Trolox equivalent mg⁻¹ DW) in Nephroselmis sp. Siph, siphonaxanthin; Neo, neoxanthin (trans and cis); XCP, xanthophyll cycle pigments (violaxanthin + antheraxanthin + zeaxanthin); Lut, lutein; Lyco, lycopene; β-Car, β-carotene.

	Antioxidant Activity
	Correlation Coefficient	Adjusted R²
Siph	0.82 **	0.66
Neo	0.82 **	0.66
XCP	0.75 **	0.55
Lut	0.51 *	0.22
Lyco	0.65 **	0.40
β-car	0.60 *	0.33
Total carotenoids	0.80 **	0.62

Note: * p < 0.05; ** p < 0.001; n = 22.