Journal ArticleDOI
Minor component fatty acids of common vegetable oils.
TLDR
A combination of gas-liquid chromatography (GLC) and oxidative cleavage on fractions isolated by mercury derivative chromatography has shown the presence of previously unreported minor component fatty acids in olive, soybean, cottonseed, corn, peanut, rapeseed and safflower oil as discussed by the authors.Abstract:
A combination of gas-liquid chromatography (GLC) and oxidative cleavage on fractions isolated by mercury derivative chromatography has shown the presence of previously unreported minor component fatty acids in olive, soybean, cottonseed, corn, peanut, rapeseed and safflower oil. All of the oils examined contain small amt of saturated acids above arachidic, some as high as hexacosanoic acid.Cis-11-octadecenoic acid was found in amt ranging from 0.5~2.0%.Cis-11-eicosenoic acid is present in the 0.04~1.4% range (rapeseed oil excluded). The tetracosenoic acid present in rapeseed (0.4%) and safflower oil (0.1%) has been identified as thecis-15-tetracosenoic acid. No unusual polyenoic species were detected with the exception of those in rapeseed oil, which contains 0.6% of both 11,14-eicosadienoic and 13,16-docosadienoic acid.read more
Citations
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Raman spectroscopy of lipids: a review
Krzysztof Czamara,Katarzyna Majzner,Marta Z. Pacia,Kamila Kochan,Agnieszka Kaczor,Malgorzata Baranska +5 more
TL;DR: Raman spectra of 35 lipids are presented and analyzed in this paper, i.e. saturated/unsaturated fatty acids, triacylglycerols, cholesterol, cholesteryl esters and phospholipids.
Journal ArticleDOI
Separations of lipids by silver ion chromatography.
TL;DR: The possibility of separating lipid materials on the basis of the number, type, and position of the unsaturated centers they contain, by virtue of the complexing of these unsaturated bonds with silver ions, provides a relatively recent but now very important addition to the range of separatory methods available to lipid chemists and biochemists.
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The fatty acid chain elongation system of mammalian endoplasmic reticulum
TL;DR: The critical, inducible and rate-limiting condensing enzyme has resisted solubilization and purification; the purification of the other components has met with limited success.
Journal ArticleDOI
Determination of double-bond positions in methylene-interrupted dienoic fatty acids by GC-MS as their dimethyl disulfide adducts
TL;DR: In this paper, a method using GC-MS for determining the double-bond positions in methylene-interrupted dienoic fatty acids as their dimethyl disulfide adducts is described.
References
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Journal ArticleDOI
Gas chromatographic characterization of fatty acids.Identification constants for mono- and dicarboxylic methyl esters
Journal ArticleDOI
Quantitative separations of higher fatty acid methyl esters by adsorption chromatography on silica impregnated with silver nitrate
TL;DR: A chromatographic adsorbent for the separation of geometric isomers of fatty acid methyl esters was developed in this article, which consists of silicic acid impregnated with silver nitrate.
Journal ArticleDOI
Search for new industrial oils. V. Oils of cruciferae
TL;DR: In this article, seeds from 37 species of plants in the family Cruciferae were analyzed for oil and protein, and the fatty acid composition of the oils was determined by gas-liquid chromatography.
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Isomerization during hydrogenation. I. Oleic acid
Robert R. Allen,Arthur A. Kiess +1 more
TL;DR: In this article, it was found that during the hydrogenation of octadecenoic acids, migration of the double bonds takes place equally in each direction, and the positional isomers that are formed are composed of the 1∶2 equilibrium mixture ofcis andtrans.
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Occurrence of Cyclo -Propene Acids in Some Plants of the Order Malvales
F. S. Shenstone,J. R. Vickery +1 more
TL;DR: Sterculic and malvalic acids are the only fatty acids known to contain a cyclo-propene ring in their structures and the occurrence of both acids in the seeds of Sterculia foetida and two species of Malvaceae is reported.