Nickel peroxide induced oxidation of canthaxanthin.
J Agric Food Chem
; 47(5): 1887-91, 1999 May.
Article
en En
| MEDLINE
| ID: mdl-10552466
Treatment of canthaxanthin (beta,beta-carotene-4,4'-dione) (1) with nickel peroxide in dichloromethane yielded a series of cleavage products, i.e., 4-oxo-beta-ionone (2), (7E, 9E)-4-oxo-beta-apo-11-carotenal (3a), (7E, 9Z)-4-oxo-beta-apo-11-carotenal (3b), 4-oxo-beta-apo-13-carotenone (4), 4-oxo-beta-apo-14'-carotenal (5), 4-oxo-beta-apo-12'-carotenal (6), and 4-oxo-beta-apo-10'-carotenal (7). In addition, oxidized canthaxanthin derivatives, i.e., isomeric ketols all-trans-9, 10-dihydro-9-hydroxy-10-oxo-canthaxanthin (8a), (9'Z)-9, 10-dihydro-9-hydroxy-10-oxo-canthaxanthin (8b), and (13'Z)-9, 10-dihydro-9-hydroxy-10-oxo-canthaxanthin (8c) were obtained together with the tentatively identified (9'Z)-canthaxanthin-20-al (9). Structure elucidation of the reaction products was achieved by mass spectrometry and two-dimensional NMR spectroscopy.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Cantaxantina
/
Níquel
Idioma:
En
Revista:
J Agric Food Chem
Año:
1999
Tipo del documento:
Article
País de afiliación:
Alemania
Pais de publicación:
Estados Unidos