Lipid Library

History of the Stephen Chang Award

Stephen S. Chang (1918-1996) was a distinguished lipid chemist, professor, and philanthropist…

Lipid Library

The Alton E Bailey Award 1959-1980

2009 marked the centennial of the AOCS as well as the 50th…

Lipid Library

The Alton E Bailey Award 1981-2000

Hans Kaunitz (1981 recipient) was a distinguished clinical professor of pathology at…

Lipid Library

The NMR Spectrum

13C-NMR spectra are based on natural 13C, which occurs at a level…

Lipid Library

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…

Lipid Library

Hermann Pardun (1908-2009)

In the summer of 2009, Dr. Hermann Pardun of Germany passed away…

Lipid Library

The Use of Countercurrent Chromatography (CCC) in Lipid Analysis

Counter-current chromatography (CCC), frequently referred to as high-speed counter-current chromatography (HSCCC, see…

Lipid Library

Gas Chromatographic Analysis of Plant Sterols

Introduction Plant sterols (phytosterols) are ubiquitous in plants, and can be classified…

Lipid Library

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…

Lipid Library

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…

Lipid Library

Wilhelm Normann (1870-1939)

Wilhelm Normann, the discoverer of fat hydrogenation (fat hardening), was born January…

Lipid Library

Non-Food Uses

Most of the oils and fats produced each year are used as…

Lipid Library

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…

Lipid Library

A Practical Guide to the Analysis of Conjugated Linoleic Acid (CLA)

This article was first published in INFORM magazine. Introduction There is increasing…

Lipid Library

Alternatives to Methyl Esters for GC Analysis of Fatty Acids

Abstract: Methyl esters are widely used for the gas chromatographic analysis of…

Lipid Library

Fatty Acid Analysis by HPLC

Abstract: Although gas chromatography is the predominant technique used for fatty acid…

Lipid Library

Some Miscellaneous Fatty Acids

Fatty compounds with various functional groups of combinations thereof have been reported…

Lipid Library

Fatty Alcohols

In comparison to the spectra of stearic acid and its esters, the…

Lipid Library

Oxo Fatty Acids

In a saturated fatty acid methyl ester, 10-oxostearic acid, the signals of…

Lipid Library

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…

Lipid Library

Transport and function of lipids in the plant phloem

Introduction Lipids are essential components of plants. They provide the energy for…

Lipid Library

Structural Analysis of the Cyclic Fatty Acids Formed during Frying

Monomeric cyclic fatty acids with an internal ring structure are formed, mainly…

Lipid Library

Cyclic Fatty Acids: Isolation and Quantitative Analysis in Food and Biological Tissues

1.  Introduction Early nutritional and toxicological studies on heated or frying fats…

Lipid Library

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…

Lipid Library

Analysis of Trans Polyunsaturated Fatty Acids

1.  Introduction Trans polyunsaturated fatty acids (PUFA) of C18, C20, and C22…

Lipid Library

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…

Lipid Library

Oils and Fats in the Market Place

Introduction Following my post-graduate training with T.P. Hilditch in Liverpool in the…

Lipid Library

Individual Commodity Oils and Fats

The Four Major Vegetable Oils Table 1 and Figure 1 show the…

Lipid Library

Hydroxy and Hydroperoxy Fatty Acids

Solvent effects (pyridine, quinoline, and carbon tetrachloride studied) on the NMR spectra…

Lipid Library

Epoxy Fatty Acids

Most epoxy compounds have signals for the protons attached to the epoxidized…

Lipid Library

Silver ion TLC with Quantification by a Gas Chromatography Method

As detailed in an earlier web page, silver nitrate TLC enables separation…

Lipid Library

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…

Lipid Library

Percy Lavon Julian (1899-1975)

Percy Lavon Julian was born April 11, 1899, in Montgomery Alabama, USA,…

Lipid Library

George S. Jamieson (1879–1959)

George Jamieson was born June 7, 1879 in Bridgeport, Connecticut and graduated…

Lipid Library

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…

Lipid Library

Hans Paul Kaufmann (1889-1971)

Hans Paul Kaufmann, a renowned and prolific lipid chemist and founder of…

Lipid Library

Biodiesel

I have only been able to make a limited update to this…

Lipid Library

Retention Order of Fatty Acids and Triacylglycerols

The interaction between Ag(I) and the olefinic double bond(s) in the acyl…

Lipid Library

Multiple Interactions in Silver Ion Chromatography of Lipids

Unravelling the interactions behind retention and separation of silver ion chromatography is…

Lipid Library

Hippolyte Mège (1817-1880)

Hippolyte Mège was born October 24, 1817, in Draguigan in southern France.…

Lipid Library

Prices of Commodity Oils

The high prices for vegetable oils attract a good deal of media…

Lipid Library

Preparative Silver Ion Chromatography on Home-Made TLC plates

1. Introduction The role of silver ion chromatography in lipid analysis is…

Lipid Library

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…