Influence of astaxanthin, emulsifier and organic phase concentration on physicochemical properties of astaxanthin nanodispersions

Table 4 Levels of independent variables established according to the central composite design (CCD)

Variable	Independent variable levels
Independent variables	Low	- α	Center	- α	High
Concentration of astaxanthin (wt %, x₁)	0.02	0.1	0.2	0.3	0.38
Concentration of emulsifier(wt %, x₂)	0.2	1	2	3	3.8
Concentration of astaxanthin (wt %,x₃)	2	10	20	30	38

ISSN: 2661-801X