期刊
ANTIOXIDANTS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/antiox9060544
关键词
corn oil; linoleic acyl groups; oxidation; oxylipins; hydroproxy-; hydroxy-; keto-; epoxy-derivatives; aldehydes oxygenatedalpha; beta-unsaturated; poly-formates; poly-hydroxy; poly-ethers; H-1 NMR
资金
- Spanish Ministry of Economy and Competitiveness (MINECO) [AGL2015-65450-R]
- Basque Government and its Departments of Universities and Research (EJ-GV) [IT-916-16]
For the first time, an important number of oxylipins have been identified and quantified in corn oil submitted to mild oxidative conditions at each time of their oxidation process. This oil can be considered as a model system of edible oils rich in polyunsaturated omega-6 groups. The study was carried out using(1)H nuclear magnetic resonance spectroscopy (H-1 NMR), which does not require chemical modification of the sample. These newly detected oxylipins include dihydroperoxy-non-conjugated-dienes, hydroperoxy-epoxy-, hydroxy-epoxy- and keto-epoxy-monoenes as well asE-epoxy-monoenes, some of which have been associated with several diseases. Furthermore, the formation of other functional groups such as poly-formates, poly-hydroxy and poly-ether groups has also been proven. These are responsible for the polymerization and increased viscosity of the oil. Simultaneously, monitoring of the formation of well-known oxylipins, such as hydroperoxy-, hydroxy-, and keto-dienes, and of different kinds of oxygenated-alpha,beta-unsaturated aldehydes such as 4-hydroperoxy-, 4-hydroxy-, 4-oxo-2E-nonenal and 4,5-epoxy-2E-decenal, which are also related to different degenerative diseases, has been carried out. The provided data regarding the compounds identification and their sequence and kinetics of formation constitute valuable information for future studies in which lipid oxidation is involved, both in food and in other scientific fields.
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