This Brief provides a comprehensive overview of NMR spectroscopy,
covering techniques such as 1H, 13C, and
31P NMR, which are reliable tools to determine lipid
oxidation level, to identify oxidation products, and to elucidate
oxidation mechanism. The Brief shows that 1H NMR spectroscopy
continually demonstrates reliability, accuracy, convenience, and
advantages over conventional analytical methods in determination of the
level of oxidation of edible oil during frying and storage through
monitoring changes in several proton signals of oil, including olefinic,
bisallylic and allylic protons. This modern analytical method is shown
within this text to be used to identify oxidation products, including
primary oxidation products such as hydroperoxides and conjugated dienes
and secondary products such as aldehydes, ketones, epoxides and their
derivatives. By identifying intermediates and final oxidation products,
many oxidation mechanisms could be elucidated. A relatively newer
method, the text demonstrates that 13C NMR and 31P
NMR spectroscopy can also provide additional information on the
molecular structure of an oxidation product. Backgrounds, principles,
and advantages over conventional methods, most recent advances, and
future prospects of these methods are discussed.
Advances in NMR Spectroscopy for Lipid Oxidation Assessment begins by
covering the various mechanisms of lipid oxidation, including various
methods to determine oxidation products. NMR spectroscopy is then
covered, including its applications in foods. The next section focuses
on 1H NMR Spectroscopy, including its use for assessment of
lipid oxidation during oil storage and frying. The following section
focuses on 13C NMR spectroscopy, including its use in
determining and identifying oxidation products and mechanisms. A final
section focuses on 31
