Synthesis of Unsaturated Fatty Acids. Positional Isomers of Linoleic Acid1

1963 ◽  
Vol 28 (5) ◽  
pp. 1254-1259 ◽  
Author(s):  
Walter J. Gensler ◽  
John J. Bruno
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Positional Isomers

Ozonolysis of unsaturated fatty acids. II. Esterification of the total products from the oxidative decomposition of ozonides with 2,2-dimethoxypropane

1967 ◽  
Vol 45 (13) ◽  
pp. 1405-1410 ◽  
Author(s):  
John D. Castell ◽  
R. G. Ackman
Keyword(s):  
Fatty Acids ◽  
Liquid Chromatography ◽  
Unsaturated Fatty Acids ◽  
Performic Acid ◽  
Acid Oxidation ◽  
Gas Liquid Chromatography ◽  
Positional Isomers ◽  
Flame Ionization ◽  
Hydrogen Flame

The total acidic products from the performic acid oxidation of the ozonide of methyl oleate formed in methanol may be esterified directly in a few hours with 2,2-dimethoxypropane. The ester concentrations are adequate for the determination of the positional isomers of monoethylenic fatty acids directly from the reaction mixture, using a hydrogen flame ionization gas–liquid chromatography detector. Dimethyl sulfoxide was not required to prevent the breakdown of 2,2-dimethoxypropane under the conditions employed.

Positional isomers of unsaturated fatty acids in rat liver lipids

Lipids ◽  
1977 ◽  
Vol 12 (3) ◽  
pp. 307-313 ◽  
Author(s):  
Brigitte Schmitz ◽  
Uwe Murawski ◽  
Manfred Pflüger ◽  
Heinz Egge
Keyword(s):  
Fatty Acids ◽  
Rat Liver ◽  
Unsaturated Fatty Acids ◽  
Positional Isomers ◽  
Liver Lipids

scholarly journals Biosynthesis of food constituents: Lipids. 1. Fatty acids and derivated compounds – a review

2011 ◽  
Vol 24 (No. 5) ◽  
pp. 193-216 ◽  
Author(s):  
J. Velíšek ◽  
K. Cejpek
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Review Article ◽  
Secondary Alcohols ◽  
Positional Isomers ◽  
Epoxy Fatty Acids ◽  
Branched Chain Fatty Acids ◽  
Branched Chain ◽  
Reaction Schemes

This review article gives a survey of the principal biosynthetic pathways that lead to the most important common fatty acids and their derivatives occurring in foods and feeds. Fatty acids are further subdivided to saturated fatty acids and unsaturated fatty acids. This review is focused on the less common fatty acids including geometrical and positional isomers of unsaturated fatty acids, acetylenic fatty acids, branched-chain fatty acids, alicyclic fatty acids, epoxy fatty acids, hydroxy fatty acids, and oxo fatty acids. A survey is further given on the biosynthesis of the aliphatic very-long-chain components (alkanes, primary and secondary alcohols, aldehydes, ketones, and esters) of plant cuticular wax derived from saturated fatty acids. Subdivision of the topics is predominantly via biosynthesis. There is extensive use of reaction schemes, sequences, and mechanisms with enzymes involved and detailed explanations using chemical principles and mechanisms.  

scholarly journals The separation of triacylglycerols using unpolar and medium polar capillary columns

2004 ◽  
Vol 22 (SI - Chem. Reactions in Foods V) ◽  
pp. S123-S126 ◽  
Author(s):  
M. Zárubová ◽  
V. Filip ◽  
J. Šmidrkal ◽  
T. Kůtek ◽  
I. Piska
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
High Temperature ◽  
Unsaturated Fatty Acids ◽  
Carbon Number ◽  
Capillary Columns ◽  
Positional Isomers ◽  
Triacylglycerol Composition ◽  
Degree Of Unsaturation ◽  
Lipid Compounds

Commercial by supplied triacylglycerols and synthesized triacylglycerols were used in this project. Analysed triacylglycerols with the range of carbon number (CN) 24–54 consisted of saturated and unsaturated fatty acids. Two capillary columns were used in the analyses of triacylglycerols, namely non-polar (Optima<sup>®</sup>-1-TG) and medium polar (Optima<sup>®</sup>-17-TG) types. In this study the effectiveness of separation (A) of triacylglycerols with different carbon number values, (B) of triacylglycerols with different unsaturation degree, (C) of positional isomers were determined and further possibilities to separate another lipid compounds were analysed. The column Optima<sup>®</sup>-17-TG separates TAG according to the degree of unsaturation while the column Optima<sup>®</sup>-1-TG separates saturated and unsaturated TAG. High temperature capillary gas chromatography was used to determine changes in triacylglycerol composition during the transesterification of structured fats.

Actual ratios of triacylglycerol positional isomers consisting of saturated and highly unsaturated fatty acids in fishes and marine mammals

2011 ◽  
Vol 127 (2) ◽  
pp. 467-472 ◽  
Author(s):  
Naohiro Gotoh ◽  
Yumiko Matsumoto ◽  
Toshiharu Nagai ◽  
Hoyo Mizobe ◽  
Ikuko Otake ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Marine Mammals ◽  
Unsaturated Fatty Acids ◽  
Positional Isomers ◽  
Highly Unsaturated Fatty Acids
Sign in / Sign up

Export Citation Format

Share Document