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Title: Selective One-Dimensional Total Correlation Spectroscopy Nuclear Magnetic Resonance Experiments for a Rapid Identification of Minor Components in the Lipid Fraction of Milk and Dairy Products: Toward Spin Chromatography?
Authors: Papaemmanouil, Christina 
Tsiafoulis, Constantinos G. 
Alivertis, Dimitrios 
Tzamaloukas, Ouranios 
Miltiadou, Despoina 
Tzakos, Andreas G. 
Gerothanassis, Ioannis P. 
Keywords: Dairy products;Lipid fraction;Spin chromatography;Totally correlated NMR spectroscopy (TOCSY)
Category: Animal and Dairy Science
Field: Agricultural Sciences
Issue Date: 10-Jun-2015
Publisher: American Chemical Society
Source: Journal of Agricultural and Food Chemistry, 2015, Volume 63, Issue 22, Pages 5381-5387
DOI: 10.1021/acs.jafc.5b01335
Journal: Journal of Agricultural and Food Chemistry 
Abstract: We report a rapid, direct, and unequivocal spin-chromatographic separation and identification of minor components in the lipid fraction of milk and common dairy products with the use of selective one-dimensional (1D) total correlation spectroscopy (TOCSY) nuclear magnetic resonance (NMR) experiments. The method allows for the complete backbone spin-coupling network to be elucidated even in strongly overlapped regions and in the presence of major components from 4 × 10^2 to 3 × 10^3 stronger NMR signal intensities. The proposed spin-chromatography method does not require any derivatization steps for the lipid fraction, is selective with excellent resolution, is sensitive with quantitation capability, and compares favorably to two-dimensional (2D) TOCSY and gas chromatography-mass spectrometry (GC-MS) methods of analysis. The results of the present study demonstrated that the 1D TOCSY NMR spin-chromatography method can become a procedure of primary interest in food analysis and generally in complex mixture analysis.
ISSN: 0021-8561
DOI: 10.1021/acs.jafc.5b01335
Rights: © 2015 American Chemical Society.
Type: Article
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