Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/8185
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 
Tzakos, Andreas G.
Gerothanassis, Ioannis P.
Miltiadou, Despoina 
Keywords: Lipid fraction
Totally correlated NMR spectroscopy (TOCSY)
Spin chromatography
Dairy products
Issue Date: 10-Jul-2015
Publisher: ACS Publications
Source: Journal of Agricultural and Food Chemistry, 2015, Volume 63, Issue 22, Pages 5381–5387
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 × 102 to 3 × 103 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.
URI: http://ktisis.cut.ac.cy/handle/10488/8185
ISSN: 0021-8561
DOI: 10.1021/acs.jafc.5b01335
Rights: © American Chemical Society
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