Abstract
The conjugated linoleic acids (CLAs), octadeca-10E,12Z-dienoic and octadeca-11Z, 13E-dienoic acids, have been identified by 2D NMR spectroscopy in simple fatty acid mixtures. Unequivocal assignments for reporter resonances in the 13C NMR spectra of these molecules are given. NMR assignments for the olefinic carbons of octadeca-8E,10Z-dienoic acid have also been obtained, along with full 13C assignments for the octadeca-9,11-dienoic acids (ZE, ZZ and EE isomers). These data have been used to interpret the 13C NMR spectrum of a complex CLA mixture, allowing the olefinic carbon chemical shifts of all isomers of 7,9 to 11,13 CLAs to be deduced. A method for the quantification of these compounds by 13C NMR is described, demonstrating the utility of 13C NMR spectroscopy in the analysis of complex CLA mixtures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
