Furanoid fatty acids in oils from soybeans lacking lipoxygenase isoenzymes |
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| Authors: | Helmut Guth Yanmin Zhang G. Laskawy Werner Grosch |
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| Affiliation: | 1. Deutsche Forschungsanstalt für Lebensmittelchemie, Lichtenbergstra?e 4, D-85748, Garching, Germany
2. Department of Chemistry, Shandong Teachers University, 250014, Jinan, People’s Republic of China
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| Abstract: | The concentrations of 10, 13-epoxy-11, 12-dimethyloctadeca-10, 12-dienoic acid (F20) and 12,15-epoxy-13, 14-dimethyleicosa-12,
14-dienoic acid (F22) were determined by a stable isotope dilution assay in oils extracted from the soybean cultivar Century
and from five soybean genotypes that lacked one or two of the three lipoxygenase isoenzymes. The concentrations of F20 and
F22 ranged between 190–225 mg/kg oil and 91–132 mg/kg oil, respectively. The concentration differences were not correlated
to the differences in lipoxygenase activities of the soybeans. |
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| Keywords: | Autoxidation furanoid fatty acids isotope dilution assay lipoxygenase mass spectrometry rancidity soybean oil |
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