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Titolo:
Carotenoids as antioxidants: Spin trapping EPR and optical study
Autore:
Polyakov, NE; Kruppa, AI; Leshina, TV; Konovalova, TA; Kispert, LD;
Indirizzi:
Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA Univ Alabama TuscaloosaAL USA 35487 Dept Chem, Tuscaloosa, AL 35487 USA Russian Acad Sci, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia Russian Acad Sci Novosibirsk Russia 630090 t, Novosibirsk 630090, Russia
Titolo Testata:
FREE RADICAL BIOLOGY AND MEDICINE
fascicolo: 1, volume: 31, anno: 2001,
pagine: 43 - 52
SICI:
0891-5849(20010701)31:1<43:CAASTE>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
HABER-WEISS REACTION; BETA-CAROTENE; RADICAL PRODUCTION; AQUEOUS-SOLUTION; OXIDATION; PEROXIDATION; MICROSOMES; KINETICS; HO2/O-2; IONS;
Keywords:
carotenoid; antioxidant; Fenton reaction; absorption; spin trapping; free radicals;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Polyakov, NE Univ Alabama, Dept Chem, POB 870336, Tuscaloosa, AL 35487 USAUniv Alabama POB 870336 Tuscaloosa AL USA 35487 AL 35487 USA
Citazione:
N.E. Polyakov et al., "Carotenoids as antioxidants: Spin trapping EPR and optical study", FREE RAD B, 31(1), 2001, pp. 43-52

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)-O-., (OOH)-O-., and (CH3)-C-. 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-rert-butyl-alpha -phenylnitrone (PBN) were used as spin traps for the EPR studies. The results showthat the scavenging ability of the carotenoids towards radical (OOH)-O-. correlates with their redox properties. (C) 2001 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 11:12:34