Astaxanthin oilis a keto-carotenoidwithin a group of chemical compounds known asterpenes.Astaxanthin oil is ametaboliteofzeaxanthinandcanthaxanthin, containing both hydroxyl and ketone functional groups. It is alipid-solublepigment with red coloring properties, which result from the extended chain of conjugated (alternating double and single)double bondsat
the center of the compound.
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