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

Table 2 Regression coefficients, significance probability ( p -value and F-ratio), R²and R² (adj) values for the final reduced second-order polynomial models

Term ^a	Particle size (nm)			PDI			Astaxanthin loss (%)
Term ^a	Coefficient	F-value	p-value	Coefficient	F-ratio	p-value	Coefficient	F-ratio	p-value
Constant	133.089	82.99	0.00	0.41996	23.09	0.000	66.040	73.46	0.000
Linear
x₁	32.485	0.23	0.642 ^b	0.379193	55.52	0.000	−133.685	28.91	0.000
x₂	−19.755	8.61	0.019	0.014151	0.33	0.572^b	−28.809	39.43	0.000
x₃	−3.702	30.25	0.001	−0.00196	1.83	0.197^b	0.556	5.00	0.047
Quadratic
x₁²	627.664	30.24	0.001	NS^b	NS^b	NS^b	NS^b	NS^b	NS^b
x₂²	5.243	21.10	0.002	0.01759	15.59	0.001	5.139	3.70	0.001
x₃²	0.072	40.14	0.000	NS^b	NS^b	NS^b	NS	NS	NS
Interaction
x₁x₂	−63.450	14.07	0.006	NS^b	NS^b	NS^b	65.529	30.51	0.000
x₁x₃	−4.689	7.68	0.024	NS^b	NS^b	NS^b	NS^b	NS^b	NS^b
x₂x₃	0.998	34.82	0.000	0.00162	5.63	0.033	−0.39591	11.55	0.006
R²	0.963			0.980			0.942
R² (adj)	0.913			0.968			0.900

^a x₁, x₂ and x₃ are astaxanthin concentration, emulsifier concentration and organic phase concentration, respectively.
^b (NS) not significant (p > 0.05).

ISSN: 2661-801X