Isothermal Solid-Liquid Equilibrium for Three Binary Systems of Oleic Acid, Linoleic Acid and α-linolenic Acid Under High Pressure

2021 ◽  
pp. 106647
Author(s):  
Kouji Maeda ◽  
Yosuke Naito ◽  
Hidetoshi Kuramochi ◽  
Koji Arafune ◽  
Kenji Iimura ◽  
...  
Keyword(s):  
High Pressure ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Linolenic Acid ◽  
Binary Systems ◽  
Liquid Equilibrium ◽  
Solid Liquid

High pressure solid–liquid equilibrium of fatty acid ethyl esters binary systems

2014 ◽  
Vol 382 ◽  
pp. 158-163 ◽  
Author(s):  
Natália D.D. Carareto ◽  
Mariana C. Costa ◽  
Antonio J.A. Meirelles ◽  
J. Pauly
Keyword(s):  
High Pressure ◽  
Fatty Acid ◽  
Binary Systems ◽  
Fatty Acid Ethyl Esters ◽  
Ethyl Esters ◽  
Liquid Equilibrium ◽  
Solid Liquid

High Pressure Solid–Liquid Equilibrium of Fatty Alcohols Binary Systems from 1-Dodecanol, 1-Tetradecanol, 1-Hexadecanol, and 1-Octadecanol

2015 ◽  
Vol 60 (10) ◽  
pp. 2966-2973 ◽  
Author(s):  
Natália Daniele Dorighello Carareto ◽  
Mariana Conceição Costa ◽  
Antonio José Almeida Meirelles ◽  
Jérôme Pauly
Keyword(s):  
High Pressure ◽  
Binary Systems ◽  
Fatty Alcohols ◽  
Liquid Equilibrium ◽  
Solid Liquid

scholarly journals Inhibition of steroid 5α-reductase by specific aliphatic unsaturated fatty acids

1992 ◽  
Vol 285 (2) ◽  
pp. 557-562 ◽  
Author(s):  
T Liang ◽  
S Liao
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Linolenic Acid ◽  
Unsaturated Fatty Acids ◽  
Binding Assay ◽  
Reductase Activity ◽  
Undecylenic Acid ◽  
Gamma Linolenic Acid ◽  
Enzymic Assay

Human or rat microsomal 5 alpha-reductase activity, as measured by enzymic conversion of testosterone into 5 alpha-dihydrotestosterone or by binding of a competitive inhibitor, [3H]17 beta-NN-diethulcarbamoyl-4-methyl-4-aza-5 alpha-androstan-3-one ([3H]4-MA) to the reductase, is inhibited by low concentrations (less than 10 microM) of certain polyunsaturated fatty acids. The relative inhibitory potencies of unsaturated fatty acids are, in decreasing order: gamma-linolenic acid greater than cis-4,7,10,13,16,19-docosahexaenoic acid = cis-6,9,12,15-octatetraenoic acid = arachidonic acid = alpha-linolenic acid greater than linoleic acid greater than palmitoleic acid greater than oleic acid greater than myristoleic acid. Other unsaturated fatty acids such as undecylenic acid, erucic acid and nervonic acid, are inactive. The methyl esters and alcohol analogues of these compounds, glycerols, phospholipids, saturated fatty acids, retinoids and carotenes were inactive even at 0.2 mM. The results of the binding assay and the enzymic assay correlated well except for elaidic acid and linolelaidic acid, the trans isomers of oleic acid and linoleic acid respectively, which were much less active than their cis isomers in the binding assay but were as potent in the enzymic assay. gamma-Linolenic acid had no effect on the activities of two other rat liver microsomal enzymes: NADH:menadione reductase and glucuronosyl transferase. gamma-Linolenic acid, the most potent inhibitor tested, decreased the Vmax. and increased Km values of substrates, NADPH and testosterone, and promoted dissociation of [3H]4-MA from the microsomal reductase. gamma-Linolenic acid, but not the corresponding saturated fatty acid (stearic acid), inhibited the 5 alpha-reductase activity, but not the 17 beta-dehydrogenase activity, of human prostate cancer cells in culture. These results suggest that unsaturated fatty acids may play an important role in regulating androgen action in target cells.

scholarly journals FATTY ACIDS COMPOSITION OF TOCTE (JUGLANS NEOTROPICA DIELS) WALNUT FROM ECUADOR

2018 ◽  
Vol 11 (2) ◽  
pp. 395 ◽  
Author(s):  
Vilcacundo E ◽  
Alvarez M ◽  
Silva M ◽  
Carpio C ◽  
Morales D ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Stearic Acid ◽  
Palmitic Acid ◽  
Linolenic Acid ◽  
Lipid Content ◽  
Methyl Esters ◽  
Total Lipid Content ◽  
Fatty Acids Composition

 Objective: The aim of this study was to determine the fatty acids composition in a tocte seeds oil (Juglans neotropica Diels) sample cultivated in Ecuador.Methods: Tocte oil was obtained from tocte seeds using the cold pressing method. Fatty acids analysis was carried out using the gas chromatography method with a mass selective detector (GC/MSD) and using the database Library NIST14.L to identify the compounds.Results: Methyl esters fatty acids were identified from tocte (J. neotropica Diels) walnut using the GC–MS analytical method. The total lipid content of tocte walnuts seeds of plants cultivated in Ecuador was of 49.01% of the total lipid content on fresh weight. Fatty acids were analyzed as methyl esters on a capillary column DB-WAX 122-7062 with a good separation of palmitic acid, stearic acid, oleic acid, linoleic acid, and linolenic acid. The structure of methyl esters fatty acids was determined using the GC–MS. Tocte walnut presents 5.05% of palmitic acid, 2.26% of stearic acid, 19.50% of oleic acid, 65.81% of linoleic acid, and 2.79% linolenic acid of the total content of fatty acids in tocte oil. Fatty acids content reported in this study were similar to the data reported for other walnuts seeds.Conclusions: Tocte seeds are a good source of monounsaturated and polyunsaturated fatty acids. Tocte oil content oleic acid and with a good content of ɷ6 α-linoleic and ɷ3 α-linolenic. Tocte walnut can help reduce risk cardiovascular diseases in Ecuador for their good composition of fatty acids.

Anti-diabetic activity of peony seed oil, a new resource food in STZ-induced diabetic mice

2015 ◽  
Vol 6 (9) ◽  
pp. 2930-2938 ◽  
Author(s):  
Jianhui Su ◽  
Hongxin Wang ◽  
Caoyang Ma ◽  
Zaixiang Lou ◽  
Chengxiang Liu ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Linoleic Acid ◽  
Blood Glucose ◽  
Linolenic Acid ◽  
Seed Oil ◽  
Fasting Blood Glucose ◽  
Diabetic Mice

Peony seed oil rich in α-linolenic acid (38.66%), linoleic acid (26.34%) and oleic acid (23.65%) reduced fasting blood glucose of diabetic mice induced by STZ.

scholarly journals Uptake and removal of oil in water by means of gels

2013 ◽  
Vol 3 (1) ◽  
pp. 32
Author(s):  
Mateus Gonzales Domiciano ◽  
Ailey Aparecida Coelho ◽  
Regiane Da Silva
Keyword(s):  
Oleic Acid ◽  
Linoleic Acid ◽  
Erucic Acid ◽  
Linolenic Acid ◽  
Palmitoleic Acid ◽  
Eicosenoic Acid ◽  
Synthesis Process ◽  
Nervonic Acid ◽  
Polymeric Networks ◽  
Oil In Water

<p>3D gels are polymeric networks, able to absorb solvents. In this work, starch and PVA gels were developed to act removing oil from water. The oil absorbing capacity can be suitable along with their composition through the synthesis process. Starch and PVA gels were grafted with palmitoleic acid, oleic acid, linoleic acid, linolenic acid, eicosenoic acid, erucic acid and nervonic acid, showing ability to absob up to 50% of weight in oil. When dried or swollen, the gels presented a handling resistance, considered important for using and removal of oil in water.</p><p>&nbsp;</p><p>DOI: http://dx.doi.org/10.14685/rebrapa.v3i1.81</p>

scholarly journals Methyl jasmonate vapors affect the composition and peroxidation of major fatty acids in common buckwheat seedlings

2016 ◽  
Vol 69 (4) ◽  
Author(s):  
Józef Klocek ◽  
Magdalena Szwed ◽  
Danuta Koczkodaj ◽  
Joanna Mitrus ◽  
Marian Saniewski ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Stearic Acid ◽  
Methyl Jasmonate ◽  
Linolenic Acid ◽  
Acid Content ◽  
Linoleic Acid Content ◽  
Common Buckwheat ◽  
Fatty Acid Peroxidation

The effect of methyl jasmonate (MJ) vapors on the composition and peroxidation of major fatty acids in the organs of common buckwheat seedlings was investigated. The composition of fatty acids in the hypocotyl and cotyledons of seedlings changed significantly under exposure to MJ vapors in closed jars. Four-day exposure to MJ led to a significant reduction in the concentrations of stearic, linoleic, and linolenic acids in the hypocotyl, whereas oleic acid levels increased approximately 3.5-fold. A decrease in stearic acid levels and an increase in the content of linolenic acid were noted in cotyledons, whereas oleic acid levels decreased in roots. Seven-day exposure to MJ vapor caused a further reduction in stearic acid content and an increase in oleic acid and linoleic acid levels in the hypocotyl. At the same time, the linoleic acid content of roots and linolenic acid levels in cotyledons were doubled, but a 5-fold reduction in linolenic acid concentrations was observed in roots. Methyl jasmonate intensified fatty acid peroxidation in cotyledons after 4 and 7 days and in roots after 4 days of exposure. Peroxidation was inhibited in the hypocotyl and roots after 7 days. The noted changes in the composition and peroxidation of fatty acids are probably indicative of senescence in buckwheat seedlings under the influence of MJ. Senescence seems to proceed faster in cotyledons than in other organs of buckwheat seedlings.

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