Results 31 to 40 of about 47,790 (162)
3,7,11,15-Tetramethylhexadecanoic acid, a constituent of butterfat*
Journal of Lipid Research, 1962 By subjecting the fatty acid methyl esters from butterfat to fractional distillation, urea fractionation, and preparative gas-liquid chromatography, a fatty acid was isolated that was characterized and identified as 3,7,11,15-tetramethylhexadecanoic acid.
W. Sonneveld +4 more
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NMR Spectra of Fatty Acid Methyl Esters
The Journal of the Society of Chemical Industry, Japan, 1965 魚油から製取した高度不飽和酸メチル,各種C18酸メチル(ステアリン,オレイン,リノール,リノレン),n-バレリアン酸メチルおよびカプロン酸メチルの100McのNMRスペクトルを測定し,60Mcのスペクトルにおいて不明確であった二,三の事実を明らかにした。すなわち,〓のシグナルは,カルボニルに対してγ位以上離れた普通のメチン〓よりも低磁場にあること, 〓のシグナルは明瞭なtripletを与えることなどを明らかにした。さらに,幾何構造の異なるオレイン酸メチルと,エライジン酸メチルとの間に,またα-エレオステアリン酸メチルと,β-エレオステアリン酸メチルとの間に,オレフィ二ックプロトンのシグナルの形状に相違があることを明らかにした。
Tetsutaro HASHIMOTO +2 more
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Preparation of fatty acid methyl esters for gas-liquid chromatography [PDF]
Journal of Lipid Research, 2010 A convenient method using commercial aqueous concentrated HCl (conc. HCl; 35%, w/w) as an acid catalyst was developed for preparation of fatty acid methyl esters (FAMEs) from sterol esters, triacylglycerols, phospholipids, and FFAs for gas-liquid chromatography (GC).
Ken’ichi Ichihara, Yumeto Fukubayashi
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Journal of Lipid Research, 1965 Rapid, large-scale separation of fatty acid methyl esters has been accomplished with acid-washed Florisil impregnated with silver nitrate. Recovery of material was quantitative and the peaks contained only one type of fatty acid; i.e., saturated ...
Robert L. Anderson, Edward J. Hollenbach
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Exploring fatty acid methyl esters
Croatian journal of food science and technologyThe search for alternative fuels led to the development of biodiesel research. However, in order for biodiesel to meet the prescribed standards, it must first fulfil the proportion of fatty acid methyl esters (FAME) in its composition. Among several possible methods for the determination of FAME, the standard prescribes the use of gas chromatography ...
Ostojčić, Marta +3 more
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Agricultura, 2011 The properties of biodiesel depend on the chemical structure of individual fatty acid methyl esters. In this the chemical structure of fatty acid chains was modified by high-pressure, high temperature treatment with a hydrogen rich gas, obtained through ...
A. I. Mihaltan +3 more
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EnergiesThis study is related to producing a set of fatty acid esters from different vegetable oils and C1–C12 alcohols. A total of 66 products were synthesized. The obtained esters were characterized by fatty acid composition, density, viscosity, saponification
Anton L. Esipovich +6 more
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Quantitative analysis of fatty acid precursors in marine samples
Journal of Lipid Research, 2003 To apply fatty acid analyses to the study of foraging ecology and diet determination, all compounds that may be deposited as fatty acids in a predator must be quantified in the prey.
Suzanne M. Budge, Sara J. Iverson
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Vitae, 2010 In a field test for antifouling activity the raw extract and the organic fraction obtained from the marine sponge Cliona delitrix, collected at the San Andrés Islas (Colombia, Caribbean Sea), showed activity.
Leonardo CASTELLANOS H. +2 more
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Two-column gas-liquid chromatography of fatty acid methyl esters
Journal of Lipid Research, 1966 Fatty acid methyl esters were separated into fractions according to chain length on a nonpolar gas-liquid chromatographic Column. These fractions were collected and rechromatographed on a polar column. Temperature programming was used in both cases. Data
Thomas M. Smith, Harold B. White, Jr.
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