PROBLEM TO BE SOLVED: To provide novel blood lipid reducing agents.SOLUTION: The present invention relates to a blood lipid reducing agent containing as an active ingredient siphonaxanthin contained in green algae of Codiaceae Codium and the like and represented by formula (1), which is a carotenoid having a special molecular structure with a keto carbonyl group conjugated with a double bond and to a food and drink for reducing blood lipids that contains 0.1 mg or more of siphonaxanthin per meal.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】新たな血中脂質低減剤の提供。【解決手段】ミル科ミル属の緑藻等に含まれる、供役二重結合に供役したケトカルボニル基を持つ特殊な分子構造をしたカロテノイドである、式(1)で表されるシフォナキサンチンを有効成分とする血中脂質低減剤およびシフォナキサンチンを1食あたり0.1mg以上含有する血中脂質低減用飲食品。【選択図】なし
