Astaxanthin is a kind of keto carotenoid, chemical name is 3,3'-dihydroxy-4,4'-diketo-β,β'-carotene, red solid powder, fat-soluble, insoluble Water, soluble in organic solvents. It is widely present in the biological world, especially in the feathers of aquatic animals such as shrimps, crabs, fish and birds, and plays a role in color development.
Astaxanthin is a chain-scission antioxidant. It has strong antioxidant capacity, can remove nitrogen dioxide, sulfide, disulfide, etc., can also reduce lipid peroxidation, and effectively inhibit lipid peroxidation caused by free radicals. At the same time, it has various physiological effects such as inhibiting tumor occurrence, enhancing immunity, removing free radicals in the body, etc., has a good therapeutic effect on skin cancer caused by ultraviolet rays, and has a preventive effect on eye diseases caused by diabetes. It is used in health care products, medicine, and medicine. Cosmetics, food additives and aquaculture have broad application prospects.
In addition to obtaining astaxanthin by biological extraction, it can also be produced by chemical synthesis, algae, bacteria, and yeast. In addition, the application of DNA recombination technology to construct high-yield astaxanthin genetic engineering is also under study.