✦ LIBER ✦

Lipid oxidation. Part V. Effect of copper on the autoxidation of methyl oleate

✍ Scribed by Pokorny, J. ;Kminek, M. ;Kvasnikova, A. ;Schmidt, O. ;Davidek, J.

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 419 KB
Volume: 24
Category: Article
ISSN: 0027-769X
DOI: 10.1002/food.19800240906

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Methyl oleate was oxidized at 60°C at free access of air in presence of varying amounts of copper(II)‐chloride. Changes of hydroperoxides followed equation (V):magnified image.

The relationships between the two reaction rate constants and the concentration of copper(I1)ions are best expressed by hyperbolic equations (VII) and VIII, respectively:magnified image.

The relation between the concentration of copper and the time necessary to attain the maximum rate of increase of the hydroperoxide content was hyperbolic as well. The rate of the hydroperoxide formation increases thus with the increasing content of copper chloride but the rate of hydroperoxide decomposition becomes still more rapid at the same time so that the accumulation of hydroperoxides is inhibited in case of extremely high concentrations of copper.

📜 SIMILAR VOLUMES

Reaction of Oxidized Lipids with Protein

Reaction of Oxidized Lipids with Protein. Part 10. Effect of Protein on the Autoxidation of Phospholipids

✍ Pokorný, J. ;Šmidrkalová, E. ;Zwain, H. ;Janíček, G. 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 273 KB 👁 1 views

## Abstract Phospholipids are oxidized at 25 °C and at 60 °C under the formation of brown pigments significantly more rapidly in mixtures with cellulose than in mixtures with casein of egg albumin. The extent of browning and the difference of reactivities are more pronounced in case of phosphatidyl

Effect of temperature on the antioxidati

Effect of temperature on the antioxidative action of inhibitors in lipid autoxidation

✍ Emma M. Marinova; Nedjalka V. Yanishlieva 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 457 KB 👁 1 views

Lipid Oxidation. Part. 1. Effect of Free

Lipid Oxidation. Part. 1. Effect of Free Carboxyl Group on the Decomposition of Lipid Hydroperoxide

✍ Pokorný, J. ;Rzepa, J. ;Janíček, G. 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 332 KB 👁 1 views

## Abstract Hydroperoxido butyl oleate was decomposed by heating in excess palmitic acid at 60–120 °C. The decomposition followed the kinetics of a first order reaction with formation of both monomeric and oligomeric secondary products. The proportions of oligomers slightly increased with increasin

Autoxidation of methyl linolenate. The e

Autoxidation of methyl linolenate. The effect of antioxidants on product distribution

✍ Kenneth E. Peers; David T. Coxon; Henry W.-S. Chan 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 342 KB 👁 2 views

## Abstract Studies on autoxidation of polyunsaturated fatty acids in the presence of antioxidants have shown that there can be significant differences in the proportions and types of products produced in ‘inhibited’ autoxidations, as compared with control autoxidations, in the absence of an antiox

Effect of quercetin and genistein on cop

Effect of quercetin and genistein on copper- and iron-induced lipid peroxidation in methyl linolenate

✍ William Y. Boadi; Peter A. Iyere; Samuel E. Adunyah 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 491 KB 👁 1 views

## Abstract The single and combined effects of two abundant ﬂavonoids, namely quercetin and genistein, were investigated according to their ability to inhibit the oxidation of methyl linolenate via Fenton's pathway. Antioxidative activity was determined by oxidizing methyl linolenate suspended in a

Inhibited Oxidation of Lipids III: On th

Inhibited Oxidation of Lipids III: On the Activity of Ascorbyl Palmitate during the Autoxidation of Two Types of Lipid Systems in the Presence of α-Tocopherol

✍ Marinova, Emma M. ;Yanishlieva, Nedjalka V. L. 📂 Article 📅 1992 🏛 John Wiley and Sons ⚖ 419 KB 👁 1 views

## n o v a and Nedjalka Vl. Ya n i s h l i e v a * The kinetic bchaviours of two types of lipid systems differing in unsaturation (sunflower oil and lard) and containing 0.05 % a-tocopherol arc investigated in the presence of different concentrations of ascorbyl palmitate (AP) at different tempera