Conjugated dienes and trienes from methyl oleate and methyl linoleate

1966 ◽  
Vol 43 (6) ◽  
pp. 380-382 ◽  
Author(s):  
Theodore Perlstein ◽  
Abner Eisner ◽  
Waldo C. Ault
Keyword(s):  
Methyl Oleate ◽  
Methyl Linoleate ◽  
Conjugated Dienes ◽  
Conjugated Dienes And Trienes

scholarly journals Quality Characteristics and Standards for Sunflower Oil from Arad Agricultural Area

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Claudia MUREŞAN ◽  
Anca Mihaela DICU ◽  
Virgil CIUTINA ◽  
Dorina CHAMBRE ◽  
Claudiu URSACHI
Keyword(s):  
Fatty Acid ◽  
High Temperature ◽  
Peroxide Value ◽  
Sunflower Oil ◽  
Quality Characteristics ◽  
Conjugated Dienes ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Specific Absorbance ◽  
Conjugated Dienes And Trienes

The purpose of this study was to determine the unsaturated fatty acid compounds of studied oils, physico-chemical parameters, and the behavior of the four oil types during oxidation and heating. This is a part of a large study effectuated on Carnia sunflower hybrids, PR64H91, PR65A22 and PR64H45 obtained through cold pressing. We followed the evolution of the UV absorption correlated with the peroxide value. The peroxide value has been presented an increased value in the first 12 heating hours, but after this period of time, it has been decreased due to the high temperature instability of the early formed hydro-peroxides. The absorbance between 220-230 nm and the specific absorbance on 232 and 270 nm (characteristic of the conjugated dienes and trienes) have increased along the experiment period. The results were compared with those from regular sunflower oil.

Effect of a medicinal agent, possessing antioxidant and antihypoxant properties, on the state of oxygen homeostasis and lipid peroxidation under experimental pneumoconiosis in albino rats

2018 ◽  
Vol 8 (2) ◽  
pp. 137-143
Author(s):  
A. Olyinyk ◽  
A Ślifirczyk ◽  
M. Nikoniuk ◽  
M. Celiński ◽  
D> Domańska
Keyword(s):  
Lipid Peroxidation ◽  
Oxygen Pressure ◽  
Oxygen Metabolism ◽  
Conjugated Dienes ◽  
Partial Oxygen Pressure ◽  
Albino Rats ◽  
Blood Oxygen Saturation ◽  
Arterial Blood ◽  
Conjugated Dienes And Trienes ◽  
Partial Oxygen

Introduction: Pneumoconioses (Pc) are interstitial pulmonary diseases of professional genesis, caused by long-term inhalation of high dust concentrations. Pcafflict 26.6-53% of the workers, exposed to dust contamination. The major feature of Pc course is irrevocability and incurability. Purpose: The research of the effect of ethylmethyl hydroxypyridine succinate, possessing antioxidant and antihypoxant characteristics, on the oxygen metabolism, acid-alkaline state, and lipid peroxidation at the background of experimental pneumoconiosis in albino rats. Material and methods: Pneumoconiosis was simulated on 72 albino rats through endotracheal injection of black coal suspension, on our own modification of O. Yu. Nykolenko methodology. Results: Manifestations of experimental pneumo-coniosis depended on the period of dust inhalation. Development of experimental pneumoconiosis was found to result in the decreased partial oxygen pressure in the arterial blood, compensated hyperventilation-induced respiratory alkalosis, and marked increase in lipid peroxidation activity that could be seen in the blood content of malon-dialdehyde, as well as of conjugated dienes and trienes. Conclusions: Application of ethylmethylhydroxy pyridine succinate in experimental pneumoconiosis has been found to improve oxygen metabolism, acid-alkaline state, and lipid peroxidation that is revealed in normalization of the partial oxygen pressure in the arterial blood, oxygen saturation of haemoglobin, index of bases’ deficiency BE (Ваse-Ехсеss), and in 1.6-2.0 decrease in the content of malondialdehyde, as well as of conjugated dienes and trienes.

Stereoselective Synthesis of Unsymmetrical Conjugated Dienes and Trienes Utilizing Silacyclobutenes.

ChemInform ◽  
2007 ◽  
Vol 38 (36) ◽  
Author(s):  
Chung Keun Jin ◽  
Toshiaki Yamada ◽  
Shigeki Sano ◽  
Motoo Shiro ◽  
Yoshimitsu Nagao
Keyword(s):  
Stereoselective Synthesis ◽  
Conjugated Dienes ◽  
Conjugated Dienes And Trienes

Speed of Sound, Density, and Derivative Properties of Methyl Oleate and Methyl Linoleate under High Pressure

2013 ◽  
Vol 58 (8) ◽  
pp. 2345-2354 ◽  
Author(s):  
El Hadji I. Ndiaye ◽  
Matthieu Habrioux ◽  
João A. P. Coutinho ◽  
Márcio L. L. Paredes ◽  
Jean Luc Daridon
Keyword(s):  
High Pressure ◽  
Methyl Oleate ◽  
Methyl Linoleate ◽  
Speed Of Sound ◽  
Sound Density

scholarly journals Nicotine-enhanced oxidation of low-density lipoprotein and its components by myeloperoxidase/H2O2/Cl- system

2015 ◽  
Vol 87 (1) ◽  
pp. 183-192 ◽  
Author(s):  
Olga M.M.F. Oliveira ◽  
Iguatemy L. Brunetti ◽  
Najeh M. Khalil
Keyword(s):  
Oxygen Consumption ◽  
Vitamin E ◽  
Methyl Linoleate ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Conjugated Dienes ◽  
Ldl Oxidation ◽  
Low Density ◽  
Tryptophan Oxidation ◽  
Amino Acid Tryptophan

In this study, the effect of nicotine on the LDL oxidation by the MPO/H2O2/Cl- system and the effect of HOCl on LDL and some of its components, such as methyl linoleate, vitamin E and the amino acid tryptophan were explored. Nicotine, in micromolar concentrations, enhanced the tryptophan oxidation, either present in LDL or free, in solution. Nicotine also decreased the formation of conjugated dienes and oxygen consumption in a methyl linoleate / HOCl system, and there was evidence to suggest an increase in chlorohydrin formation. Acceleration of the vitamin E oxidation by HOCl was also observed in the presence of nicotine. These data show that the interaction of nicotine and HOCl can promote significant biochemical modifications in LDL particle and some of its components involved in the pathogenesis of cardiovascular and other diseases.

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