Lipid Library
History of the Stephen Chang Award
Stephen S. Chang (1918-1996) was a distinguished lipid chemist, professor, and philanthropist…
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The Alton E Bailey Award 1959-1980
2009 marked the centennial of the AOCS as well as the 50th…
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The Alton E Bailey Award 1981-2000
Hans Kaunitz (1981 recipient) was a distinguished clinical professor of pathology at…
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Quantification by 1H-NMR
1H-NMR is useful for a variety of quantitative analytical purposes in the…
Lipid Library
Analysis of Oxidized Fatty Acids
1. Introduction Objective and reliable analysis of used frying fats can be…
Lipid Library
Analysis of Tocopherols and Tocotrienols by HPLC
1. Introduction Tocopherols and tocotrienols, collectively known as tocols, are amphipathic and…
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Hermann Pardun (1908-2009)
In the summer of 2009, Dr. Hermann Pardun of Germany passed away…
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The Use of Countercurrent Chromatography (CCC) in Lipid Analysis
Counter-current chromatography (CCC), frequently referred to as high-speed counter-current chromatography (HSCCC, see…
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Gas Chromatographic Analysis of Plant Sterols
Introduction Plant sterols (phytosterols) are ubiquitous in plants, and can be classified…
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Determination of Oxidized Monomeric, Dimeric and Oligomeric Triacylglycerols; Diacylglycerols and Free Fatty Acids
1. Introduction Determination of polar compounds by adsorption chromatography and further analysis…
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Identification of FAME Double Bond Location by Covalent Adduct Chemical Ionization (CACI) Tandem Mass Spectrometry
Selected Topics in the Analysis of Lipids Methods for the structural characterization…
Lipid Library
The AOCS-Supelco Research Award 1982 to 1996
The Awardees David Kritchevsky (1920-2006). The 1996 recipient was born in Russia…
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Wilhelm Normann (1870-1939)
Wilhelm Normann, the discoverer of fat hydrogenation (fat hardening), was born January…
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Separation and Quantification of Oxidized Monomeric, Dimeric and Oligomeric Fatty Acids
1. Introduction Quantification of the main groups of fatty acids undergoing thermal…
Lipid Library
Application of Infrared Spectroscopy to the Rapid Determination of Total Saturated, trans, Monounsaturated, and Polyunsaturated Fatty Acids
Vibrational Spectroscopy Infrared (IR) spectroscopy is an old analytical technique that has…
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A Practical Guide to the Analysis of Conjugated Linoleic Acid (CLA)
This article was first published in INFORM magazine. Introduction There is increasing…
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Alternatives to Methyl Esters for GC Analysis of Fatty Acids
Abstract: Methyl esters are widely used for the gas chromatographic analysis of…
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Fatty Acid Analysis by HPLC
Abstract: Although gas chromatography is the predominant technique used for fatty acid…
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Some Miscellaneous Fatty Acids
Fatty compounds with various functional groups of combinations thereof have been reported…
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Oxo Fatty Acids
In a saturated fatty acid methyl ester, 10-oxostearic acid, the signals of…
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The Use of Lithiated Adducts for Structural Analysis of Acylglycerols by Mass Spectrometry with Electrospray Ionization
Vibrational Spectroscopy Mass spectrometry (MS) is a powerful method for the identification…
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Transport and function of lipids in the plant phloem
Introduction Lipids are essential components of plants. They provide the energy for…
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Structural Analysis of the Cyclic Fatty Acids Formed during Frying
Monomeric cyclic fatty acids with an internal ring structure are formed, mainly…
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Cyclic Fatty Acids: Isolation and Quantitative Analysis in Food and Biological Tissues
1. Introduction Early nutritional and toxicological studies on heated or frying fats…
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Analysis of Used Frying Oils and Fats by High-Performance Size-Exclusion Chromatography
1. Introduction Direct analysis of used frying oils and fats by high-performance…
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Analysis of Trans Polyunsaturated Fatty Acids
1. Introduction Trans polyunsaturated fatty acids (PUFA) of C18, C20, and C22…
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Determination of Polar Compounds in Used Frying Oils and Fats by Adsorption Chromatography
1. Introduction During frying, new compounds are formed due to the joint…
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Oils and Fats in the Market Place
Introduction Following my post-graduate training with T.P. Hilditch in Liverpool in the…
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Individual Commodity Oils and Fats
The Four Major Vegetable Oils Table 1 and Figure 1 show the…
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Hydroxy and Hydroperoxy Fatty Acids
Solvent effects (pyridine, quinoline, and carbon tetrachloride studied) on the NMR spectra…
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Epoxy Fatty Acids
Most epoxy compounds have signals for the protons attached to the epoxidized…
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Silver ion TLC with Quantification by a Gas Chromatography Method
As detailed in an earlier web page, silver nitrate TLC enables separation…
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Selected Patents 2016
The following list contains brief details of current patents, which appeared to…
Lipid Library
David Kritchevsky (1920 to 2006)
David Kritchevsky, a biochemist by training, arguably contributed as many “firsts” to…
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Percy Lavon Julian (1899-1975)
Percy Lavon Julian was born April 11, 1899, in Montgomery Alabama, USA,…
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George S. Jamieson (1879–1959)
George Jamieson was born June 7, 1879 in Bridgeport, Connecticut and graduated…
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Selected Patents 2013
The following list contains brief details of current patents, which appeared to…
Lipid Library
Virgil C. Mehlenbacher (1901-1992)
Virgil C. Mehlenbacher was born March 31, 1901 in Kensington, Minnesota, but…
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Hans Paul Kaufmann (1889-1971)
Hans Paul Kaufmann, a renowned and prolific lipid chemist and founder of…
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Retention Order of Fatty Acids and Triacylglycerols
The interaction between Ag(I) and the olefinic double bond(s) in the acyl…
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Multiple Interactions in Silver Ion Chromatography of Lipids
Unravelling the interactions behind retention and separation of silver ion chromatography is…
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Hippolyte Mège (1817-1880)
Hippolyte Mège was born October 24, 1817, in Draguigan in southern France.…
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Prices of Commodity Oils
The high prices for vegetable oils attract a good deal of media…
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Preparative Silver Ion Chromatography on Home-Made TLC plates
1. Introduction The role of silver ion chromatography in lipid analysis is…
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A Guide to the Practice of Analytical Silver Ion-thin-layer chromatography on Pre-coated Silica Gel Plates
1. Introduction Silver ion-thin-layer chromatography (Ag-TLC) in analytical mode is the method…
Lipid Library
A Guide to the Practice of Quantitative Silver Ion TLC of Fatty Acids and Triacylglycerols
1. Introduction As with all chromatographic techniques in use, silver-ion thin-layer chromatography…