Astaxanthin shine keto carotenoid da aka samo daga Haematococcus Pluvialis kuma yana da mai-mai narkewa. Ya wanzu a cikin duniyar nazarin halittu, musamman a cikin gashin tsuntsaye na dabbobin ruwa irin su shrimps, crabs, kifi, da tsuntsaye, kuma suna taka rawa wajen samar da launi. Suna taka rawa biyu a cikin tsire-tsire da algae, suna shayar da makamashi mai haske don photosynthesis da kariya. chlorophyll daga lalacewar haske. Muna samun carotenoids ta hanyar cin abinci wanda aka adana a cikin fata, yana kare fata daga lalacewar hoto.
Nazarin ya gano cewa astaxanthin shine antioxidant mai ƙarfi wanda shine sau 1,000 mafi inganci fiye da bitamin E wajen tsarkake radicals kyauta da aka samar a cikin jiki. Free radicals nau'i ne na iskar oxygen maras ƙarfi wanda ya ƙunshi na'urorin lantarki marasa ƙarfi waɗanda ke tsira ta hanyar shigar da electrons daga wasu kwayoyin halitta. Da zarar wani free radical ya amsa tare da barga kwayoyin halitta, an canza shi zuwa wani barga free radical kwayoyin halitta, wanda ya fara da wani sarkar dauki na free radical haduwa.Da yawa masana kimiyya sun yi imani da cewa tushen dalilin tsufa na mutum shi ne salon salula lalacewa saboda rashin kula da sarkar dauki. masu tsattsauran ra'ayi. Astaxanthin yana da tsari na musamman na kwayoyin halitta da ingantaccen ƙarfin antioxidant.