期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 85, 期 14, 页码 2413-2420出版社
WILEY
DOI: 10.1002/jsfa.2273
关键词
sunflower and corn oils; oxidation process; H-1 nuclear magnetic resonance; acyl groups; primary oxidation compounds; secondary oxidation compounds; hydroperoxyalkenals; hydroxyalkenals
The oxidation process of sunflower and corn oils at 70 degrees C with circulating air has been studied by means of H-1 nuclear magnetic resonance (NMR). The changes produced in the two oils are compared not only in relation to the rate of degradation of acyl groups but also with reference to both the rate of formation and degradation of primary oxidation products as well as the rate of formation of secondary oxidation products such as aldehydes. Special attention is paid to the evolution of the different kinds of aldehydes formed throughout the process. The great ability of these oils to produce geno- and cytotoxic aldehydes under the above conditions is proved. Moreover, peroxide and anisidine values of corn oil throughout its oxidation process have also been determined and the results obtained have been compared with those provided by the H-1 NMR spectra, showing good agreement. (c) 2005 Society of Chemical Industry.
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