抄録
The carotenoids in the muscle of the sea hare Dolabella auricularia were investigated. An apocarotenoid has been isolated and its structure was elucidated to be β-apo-8'-carotenal on the basis of the spectral data. β-Apo-8'-carotenol which seems to be a metabolic carotenoid of β-apo-8'-carotenal was also isolated. Besides these two carotenoids, 9-cis-β-apo-8'-carotenal, citranaxanthin, lutein and fucoxanthin were identified.