Table 3.

Purity of astaxanthin for each stage under different operative conditions with and without co-solvent [57].

CO2 Flow Rate = 3.62 g/min
T and P	Astaxanthin Purity (%) with Co-Solvent				Astaxanthin Purity (%) without Co-Solvent
	20 min	40 min	60 min	80 min	20 min	40 min	60 min	80 min
50 °C 100 bar	0.86	10.33	5.13	4.85	0	0	0	0
50 °C 400 bar	2.71	1.34	1.55	1.84	11.81	29.41	32.96	32.48
50 °C 550 bar	2.33	1.21	4.82	8.60	7.30	17.31	22.57	26.67
65 °C 100 bar	3.28	2.01	0.53	1.18	0	0	0	0
65 °C 400 bar	5.24	4.39	0.01	0.01	4.96	20.86	28.53	29.46
65 °C 550 bar	6.67	0.00	0.40	0.08	2.42	15.21	17.75	27.14
80 °C 100 bar	0.18	0.89	2.86	1.96	0	0	0	0
80 °C 400 bar	0.72	18.11	0.06	0.08	7.70	13.32	29.11	34.23
80 °C 550 bar	1.02	14.03	0.03	0.19	2.21	8.03	19.63	22.15