自動酸化ドコサヘキサエン酸メチルの過酸化物濃縮体

概要

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Highly purified methyl docosahexaenoate was prepared from cuttle-fish oil. Autoxidation of this product was performed in the dark at 33 to 35°C. Peroxide concentrates from autoxidized methyl docosahexaenoate (I) were obtained by the countercurrent distribution method. The peroxide value (m equiv./kg) of (I) was 1.33 × 10<SUP>4</SUP>, which is the highest value for lipid. By investigating the peroxide value and infrared spectra, etc., it was suggested that at least dihydroperoxide is contained. The amount of conjugated diene is about lees than 0.5 per molecule and a higher conjugated polyene than triene can not be found, through the ultraviolet spectra of (I). It was presumed that (I) might contain the-OOH group at α-methylene position from investigation of the degree of α-methylene group absorption in the infrared spectra and that of conjugation, etc., The absorptions attributed to aldehydes were slightly noticeable. Trans-trans conjugated diene increased. Considerable numbers of cis nonconjugated forms remained. It was concluded that polymers were generated in respectable amount.
社団法人日本油化学会の論文