Molecules 2017, 22(10), 1663; doi:10.3390/molecules22101663
High Resolution NMR Spectroscopy as a Structural and Analytical Tool for Unsaturated Lipids in Solution
1
Section of Organic Chemistry and Biochemistry, Department of Chemistry, University of Ioannina, GR-45110 Ioannina, Greece
2
H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
3
Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 214412, Saudi Arabia
4
NMR Center, University of Ioannina, GR-45110 Ioannina, Greece
*
Author to whom correspondence should be addressed.
Received: 5 September 2017 / Revised: 28 September 2017 / Accepted: 1 October 2017 / Published: 5 October 2017
(This article belongs to the Special Issue New Methodologies in Natural Product Analytics and Structure Elucidation)
Abstract
Abstract: Mono- and polyunsaturated lipids are widely distributed in Nature, and are structurally and functionally a diverse class of molecules with a variety of physicochemical, biological, medicinal and nutritional properties. High resolution NMR spectroscopic techniques including 1H-, 13C- and 31P-NMR have been successfully employed as a structural and analytical tool for unsaturated lipids. The objective of this review article is to provide: (i) an overview of the critical 1H-, 13C- and 31P-NMR parameters for structural and analytical investigations; (ii) an overview of various 1D and 2D NMR techniques that have been used for resonance assignments; (iii) selected analytical and structural studies with emphasis in the identification of major and minor unsaturated fatty acids in complex lipid extracts without the need for the isolation of the individual components; (iv) selected investigations of oxidation products of lipids; (v) applications in the emerging field of lipidomics; (vi) studies of protein-lipid interactions at a molecular level; (vii) practical considerations and (viii) an overview of future developments in the field. View Full-TextKeywords:
unsaturated lipids; polyunsaturated fatty acids (PUFAs); NMR; chemical shifts; coupling constants
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Alexandri, E.; Ahmed, R.; Siddiqui, H.; Choudhary, M.I.; Tsiafoulis, C.G.; Gerothanassis, I.P. High Resolution NMR Spectroscopy as a Structural and Analytical Tool for Unsaturated Lipids in Solution. Molecules 2017, 22, 1663.
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