Abstract
The presence of carotenoids from the gonad of scallops, Patinopecten yessoensis was investigated.
The following five carotenoids were identified as free form: pectenolone (73.0%), pectenoxanthin (13.0)%, diatoxanthin (9.0)%, a new carotenoid, 3, 4, 3'-trihydroxy-7', 8'-didehydro-β-carotene (3.5%), and astaxanthin (1.0%).
This is the first example of reporting the isolation of pectenolone in free form.