Absorption of Deuterium-Labeled cis- and trans-Octadecenoic Acid Positional Isomers in Man *

2018 ◽  
pp. 159-176
Author(s):  
E.A. Emken
Keyword(s):  
Octadecenoic Acid ◽  
Positional Isomers ◽  
Trans Octadecenoic Acid ◽  
Cis And Trans

scholarly journals Resolution Behavior of cis- and trans-Octadecenoic Acid Isomers by AOCS Official Method Using SP-2560 Column

2013 ◽  
Vol 62 (10) ◽  
pp. 781-788 ◽  
Author(s):  
Kazuaki Yoshinaga ◽  
Masaharu Asanuma ◽  
Chao Xu ◽  
Hoyo Mizobe ◽  
Koichi Kojima ◽  
...  
Keyword(s):  
Octadecenoic Acid ◽  
Official Method ◽  
Aocs Official ◽  
Aocs Official Method ◽  
Trans Octadecenoic Acid ◽  
Cis And Trans

Use of published analyses of food items to determine dietary trans octadecenoic acid

1986 ◽  
Vol 86 (10) ◽  
pp. 1391-1394
Author(s):  
Mieke M. van den Reek ◽  
Margaret C. Craig-Schmidt ◽  
A.J. Clark
Keyword(s):  
Octadecenoic Acid ◽  
Food Items ◽  
Trans Octadecenoic Acid

Gas-Liquid Chromatographic Determination of TYans-Unsaturation in Fats and Oils on Packed Columns: Effect of Positional Isomers

1978 ◽  
Vol 61 (3) ◽  
pp. 702-708
Author(s):  
Henry B S Conacher ◽  
Jagannath R Iyengar
Keyword(s):  
Fats And Oils ◽  
Chromatographic Determination ◽  
Packed Columns ◽  
Gas Liquid Chromatography ◽  
Positional Isomers ◽  
Tubular Columns ◽  
Acid Isomerization ◽  
Cis And Trans ◽  
Liquid Chromatographic

Abstract Studies in our laboratories indicated that the trans contents of a number of commercial margarines, determined by gas-liquid chromatography (GLC) on a 15 ft column packed with 10% Silar IOC, were approximately 80-85% of those determined by infrared spectroscopy. This is mainly due to overlap of some of the trans positional isomers with the cis positional isomers in the octadecenoate fraction, shown by studies involving determination of the transoctadecenoate content of the margarines by silver ion thin layer chromatography/GLC, and by preparation and study of the GLC behavior of the cis and trans positional isomers of Δ6-, Δ9-, Δ12-, and Δl5-octadecenoates. The last 3 isomers were prepared by hydrazine reduction and nitrous acid isomerization of linoleic and linolenic acids. Since it is possible that longer, more efficient columns might result in better separation of the cis- and traru-octadecenoate isomers, it is recommended that studies be continued on longer packed columns (20 ft) and possibly on support-coated open tubular columns.

The trans-octadecenoic acid content of butterfat

1953 ◽  
Vol 46 (2) ◽  
pp. 364-375 ◽  
Author(s):  
David G. Cornwell ◽  
Richard Backderf ◽  
Christopher L. Wilson ◽  
J.B. Brown
Keyword(s):  
Acid Content ◽  
Octadecenoic Acid ◽  
Trans Octadecenoic Acid
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