Summary
Because the measurements that have been described were designed as preliminary studies, a comparison of the spectral characteristics of ethyl oleate, linoleate, and linolenate at this stage can only be made along broad lines. At 2,300 angstroms the measurements for ethyl oleate were too inaccurate or incomplete to permit any comparisons but in the cases of the linoleate and linolenate oxidation produced marked increases in the absorption as measured in alcohol, which were not significantly altered by the addition of alkali.
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References
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Lundberg, W.O., Holman, R.T. & Burr, G.O. Spectroscopic changes in fats during rancidification. Oil Soap 23, 10–14 (1946). https://doi.org/10.1007/BF02593230
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DOI: https://doi.org/10.1007/BF02593230