Abstract: A method for producing astaxanthin incorporates a method for producing astaxanthin-rich algae cells and a method for extracting astaxanthin therefrom. An initial feedstock comprises healthy algae, water, and nutrients. During a growth phase, carbon dioxide and light from a light source are supplied to the feedstock, thereby amplifying the algae. At least a portion of the nutrients remaining after amplification of the algae are separated from the amplified algae. During a stress phase, carbon dioxide and light are supplied to the amplified algae, thereby promoting production of astaxanthin by the amplified algae. The amplified algae and a cover are placed within an interior of an attrition mill having interior surfaces and media which are substantially non-reactive to astaxanthin and milled to release the astaxanthin from the algae. The cover limits oxidation of the released astaxanthin.

Abstract: A method for producing astaxanthin incorporates a method for producing astaxanthin-rich algae cells and a method for extracting astaxanthin therefrom. An initial feedstock comprises healthy algae, water, and nutrients. During a growth phase, carbon dioxide and light from a light source are supplied to the feedstock, thereby amplifying the algae. At least a portion of the nutrients remaining after amplification of the algae are separated from the amplified algae. During a stress phase, carbon dioxide and light are supplied to the amplified algae, thereby promoting production of astaxanthin by the amplified algae. The amplified algae and a cover are placed within an interior of an attrition mill having interior surfaces and media which are substantially non-reactive to astaxanthin and milled to release the astaxanthin from the algae. The cover limits oxidation of the released astaxanthin.