Animal and vegetable fats and oils. Determination of the content of trans fatty acid isomers of vegetable fats and oil. Gas chromatographic method

2015 ◽  
Keyword(s):  
Fatty Acid ◽  
Trans Fatty Acid ◽  
Chromatographic Method ◽  
Fats And Oils ◽  
Trans Fatty Acid Isomers ◽  
Gas Chromatographic Method ◽  
Oil Gas

Evaluation of Methods for Identifying Fatty Acid Esters Separated by Gas Chromatography

1965 ◽  
Vol 48 (3) ◽  
pp. 482-489
Author(s):  
John L Iverson ◽  
David Firestone ◽  
Jerome Eisner
Keyword(s):  
Fatty Acid ◽  
Retention Time ◽  
Chromatographic Method ◽  
Fats And Oils ◽  
Fatty Acid Esters ◽  
Correct Identification ◽  
Marine Oils ◽  
Gas Chromatographic Method ◽  
Acid Esters ◽  
Evaluation Of Methods

Abstract Correct identification of component fatty acids is frequently difficult when determining fatty acid composition by the AOCS-AOAC gas chromatographic method. Fats and oils that contain a large number of components, such as butter, peanut, and marine oils, are particularly troublesome. The usefulness and limitations of (a) isothermal semilogarithmic plots, (b) retention time ratios, (c) programmed temperature semilogarithmic plots, and (d) variation of retention time with temperature are evaluated.

Gas Chromatographic Determination of Mono- and Diglycerides in Fats and Oils: Summary of Collaborative Study

1994 ◽  
Vol 77 (3) ◽  
pp. 677-680 ◽  
Author(s):  
David Firestone
Keyword(s):  
Chromatographic Method ◽  
Collaborative Study ◽  
Fats And Oils ◽  
Chromatographic Determination ◽  
Study Results ◽  
Sunflower Oils ◽  
Aoac Method ◽  
Materials Used ◽  
Gas Chromatographic Method

Abstract A collaborative study was conducted on a capillary gas chromatographic method for the determination of mono- and diglycerides in fats and oils. Other components of fats and oils such as glycerol, fatty acids, and sterols may be analyzed by this method. Six materials used in the study consisted of 2 commercial mono- and diglyceride emulsifiers, 2 synthetic compositions with known amounts of monoand diglycerides in the presence of an excess of triglycerides, and 2 refined sunflower oils spiked with mono- and diglycerides. Eight laboratories participated in the study. On the basis of the collaborative study results, the method has been adopted first action by AOAC INTERNATIONAL as an IUPAC/AOCS/AOAC method.

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