Autoxidation of biological molecules. 2. Autoxidation of a model membrane. Comparison of the autoxidation of egg lecithin phosphatidylcholine in water and in chlorobenzene

Barclay, L. R. C.; Ingold, K. U.

doi:10.1021/ja00411a036

Cited by 251 publications

(151 citation statements)

References 4 publications

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“…E for distance motives. It has been hypothesized [42] that, once lipid peroxyl is formed, it diffuses to the surface of the membrane and in this way can be trapped by the hydroxy group of vit. E. If we suppose that this floating is faster in micelles than in the bilayer, we can explain the different activity of vit.…”

Section: Epr Measurementsmentioning

confidence: 99%

Antioxidant properties of resveratrol and piceid on lipid peroxidation in micelles and monolamellar liposomes

Fabris

Momo

Ravagnan

et al. 2008

Biophysical Chemistry

155

102

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The antioxidant activities of trans-resveratrol (trans-3,5,4′-trihydroxystilbene) and trans-piceid (trans-5,4′-dihydroxystilbene-3-O-β-D-glucopyranoside), its more widespread glycosilate derivative, have been compared measuring their inhibitory action on peroxidation of linoleic acid (LA) and the radical scavenging ability towards different free radicals (such as DPPH) and radical initiators. It has been found that the two stilbenes have similar antioxidant capacity, while the comparison with BHT (2,6-di-tert-butyl-4-methylphenol) and α-tocopherol (vitamin E, vit. E), taken as reference, points out a slower but prolonged protective action against lipid peroxidation. Furthermore, piceid appears more efficacious than resveratrol as a consequence of the reaction of the latter with its radical form. The DSC profiles of phosphatidylcholine liposomes of various chain lengths, and EPR measurements of spin labelled liposomes demonstrated that the susceptible hydroxyl group of these compounds are located in the lipid region of the bilayer close to the double bonds of polyunsatured fatty acids, making these stilbenes particularly suitable for the prevention and control of the lipid peroxidation of the membranes.

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Section: Epr Measurementsmentioning

confidence: 99%

Antioxidant properties of resveratrol and piceid on lipid peroxidation in micelles and monolamellar liposomes

Fabris

Momo

Ravagnan

et al. 2008

Biophysical Chemistry

155

102

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“…Based on the obtained results as well as data of literature [3,16] and data of our previous works [17,18] the process of cyclooctene (RH) oxidation by molecular oxygen in the presence of VSi 2 and TBHP on the initial stages of the reaction can be described by the scheme that contains radical formation, chain propagation and chain termination reactions: 1) radical formation reactions: .…”

Section: Resultsmentioning

confidence: 74%

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

et al. 2009

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Abstract:The catalytic effect of VSi 2 on initial stages of the liquid-phase oxidation of cyclooctene by molecular oxygen was studied. The vanadium disilicide influences on the oxidation process in the presence of hydroperoxide. VSi 2 takes part in a radical formation stage by catalysis of hydroperoxide decomposition reaction. The catalyst was investigated before and after reaction using FTIR spectroscopy. From the data obtained, the kinetic model of the catalytic oxidation process was proposed and the equation for the reaction rate was derived. The equation has described all observed dependences of reaction rate on the concentration of reactants and content of catalyst.

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“…Taking into account the obtained results and based on data of literature [14,15] as well as data of our previous works [16][17][18], we can propose the next model of the radical formation process in the oxidation process of 1-octene by molecular oxygen in the presence of metal carbides and TBHP on the initial stages of the reaction…”

Section: Resultsmentioning

confidence: 80%

The Influence of Metal Carbides on the Oxidation Processes of 1-Octene by Molecular Oxygen and tert-Butyl Hydroperoxide

Makota

Bulgakova

2012

ISRN Physical Chemistry

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The influence of metal carbides, TiC, VC, ZrC, Mo 2 C, TaC, and WC, on the liquid-phase oxidation processes of 1-octene by molecular oxygen and tert-butyl hydroperoxide was investigated. It was established that vanadium carbide is the most active in the oxidation process of 1-octene by molecular oxygen as well as in the tert-butyl hydroperoxide unproductive decomposition process in the hydroperoxide oxidation reaction. It was shown that there is a correlation among the activities of metal carbides in these processes.

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Autoxidation of biological molecules. 2. Autoxidation of a model membrane. Comparison of the autoxidation of egg lecithin phosphatidylcholine in water and in chlorobenzene

Cited by 251 publications

References 4 publications

Antioxidant properties of resveratrol and piceid on lipid peroxidation in micelles and monolamellar liposomes

Antioxidant properties of resveratrol and piceid on lipid peroxidation in micelles and monolamellar liposomes

The study of cyclooctene oxidation with molecular oxygen catalyzed by VSi2

The Influence of Metal Carbides on the Oxidation Processes of 1-Octene by Molecular Oxygen and tert-Butyl Hydroperoxide

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