Carotenoids as antioxidants: spin trapping EPR and optical study.
Free Radic Biol Med
; 31(1): 43-52, 2001 Jul 01.
Article
en En
| MEDLINE
| ID: mdl-11425489
ABSTRACT
The role of several natural and synthetic carotenoids as scavengers of free radicals was studied in homogeneous solutions. A set of free radicals *OH, *OOH, and *CH(3) were generated by using the Fenton reaction in dimethyl sulfoxide. It was shown that the spin trapping technique is more informative than optical methods for the experimental conditions under study. 5,5-Dimethyl-pyrroline-N-oxide (DMPO) and N-tert-butyl-alpha-phenylnitrone (PBN) were used as spin traps for the EPR studies. The results show that the scavenging ability of the carotenoids towards radical *OOH correlates with their redox properties.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Carotenoides
/
Antioxidantes
Idioma:
En
Revista:
Free Radic Biol Med
Asunto de la revista:
BIOQUIMICA
/
MEDICINA
Año:
2001
Tipo del documento:
Article
País de afiliación:
Rusia