Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE ANTIOXIDANT ACTIVITY OF CARNOSINE AND ITS CONSEQUENCES ON THE VOLATILE PROFILES OF LIPOSOMES DURING IRON ASCORBATE INDUCED PHOSPHOLIPIDOXIDATION/
Autore:
KANSCI G; GENOT C; MEYNIER A; GANDEMER G;
Indirizzi:
INRA,LAB ETUD INTERACT MOL ALIMENTAIRES,EQUIPE LIPIDES FLAVEUR,BP 1627 F-44316 NANTES 03 FRANCE INRA,LAB ETUD INTERACT MOL ALIMENTAIRES,EQUIPE LIPIDES FLAVEUR F-44316 NANTES 03 FRANCE
Titolo Testata:
Food chemistry
fascicolo: 2, volume: 60, anno: 1997,
pagine: 165 - 175
SICI:
0308-8146(1997)60:2<165:TAAOCA>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
HISTIDINE-CONTAINING DIPEPTIDES; LIPID-PEROXIDATION; GROUND PORK; MUSCLE; ANSERINE; OXYGEN; INHIBITION; STEREOCHEMISTRY; HYDROPEROXIDES; HOMOCARNOSINE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
42
Recensione:
Indirizzi per estratti:
Citazione:
G. Kansci et al., "THE ANTIOXIDANT ACTIVITY OF CARNOSINE AND ITS CONSEQUENCES ON THE VOLATILE PROFILES OF LIPOSOMES DURING IRON ASCORBATE INDUCED PHOSPHOLIPIDOXIDATION/", Food chemistry, 60(2), 1997, pp. 165-175

Abstract

The natural dipeptide L-carnosine (beta-Ala-His) exhibits antioxidative properties and can be used as an antioxidant in food products. Its antioxidant activity and its effect on the volatile compounds producedduring lipid oxidation was studied in a meat-related model system (liposomes of muscle phospholipids). Oxygen uptake, conjugated dienes, trienes and ketodienes, thiobarbituric acid reactive substances (TBARS) and volatile compounds were measured after induction of oxidation by equimolar Fe(III)/ascorbate (45 mu M). Inclusion of carnosine (2-10 mM)lead to a decrease in all indices of lipid oxidation, except for the initial rate of oxygen uptake, which increased, and the rates of oxygen uptake 5 or more min after catalyst injection, which remained constant. The decrease varied as a function of carnosine concentration, method of measurement and incubation time. When carnosine was added to previously oxidised liposomes, TBARS, t-2-undecenal, total 2-alkenals andhexanol amounts decreased significantly. Carnosine antioxidant activity is multifunctional: it has a buffering effect; it interferes in theinitiation step of oxidation; it decreases the amount of preformed peroxides; it reacts with some secondary products. (C) 1997 Elsevier Science Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 15:37:49