“…Astaxanthin (3,3 -dihydroxy-β, β-carotene-4,4 -dione; C 40 H 5 2O 4 ) is a lipid-soluble oxycarotenoid widely used in food, aquaculture, nutraceutical, cosmetic and pharmaceutical industries due to its relatively high antioxidant activity compared with other antioxidant molecules. It has been reported that astaxanthin has 10 times the antioxidant activity of β-carotene, 60 times of coenzyme Q10, and 1000 times more antioxidant activity than vitamin E (Higuera-Ciapara et al, 2006;Shah et al, 2016;Zhao et al, 2019). Astaxanthin unique chemical structure makes it a powerful antioxidant with extraordinary biological and physiological properties including cardiovascular disease prevention, strengthening the immune system and anti-tumoral, anti-inflammatory, and anti-diabetes effects (Kurihara et al, 2002;Uchiyama et al, 2002;Ohgami et al, 2003;Pashkow et al, 2008;Nagendraprabhu and Sudhandiran, 2011;Peng et al, 2012;Fakhri et al, 2018).…”