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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.
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|
|Appears in Collections:||Άρθρα/Articles|
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