イカ油の研究 (第11報) : グリセリド成分について

概要

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After eliminating the free acid in cuttle-fish oil, brominated glycerides were isolated and purified by utilizing the difference of solubility against various solvents.<BR>When melting point and bromine content were fixed constant, it was assumed to be pure. This was then hydrolysed with concentrated hydrochloric acid to form the brominated acid and these were again isolated and purified with organic solvent. Then this was debrominated with zinc powder, concentrated sulphuric acid and methanol, and formed fatty acid was identified. Thus, the composition of the fatty acid in glyceride was investigated. Considering the proportion with regard to the quantity, it was supposed that the composition of the sample will be as follows;<BR>Cuttle-fish oil (Free fatty acid) (10%) 1) Palmito-palmitoleo-olein 10% 2) Palmito-oleo-gadolein 12% 3) Myristo-palmitoleo-olein 10% 4) Stearo-palmitoleo-eicosatrienin 12% 5) Palmito-oleo-eicosatrienin 7% 6) Trieicosatrienin 4% 7) Octadecatrieno-eicosatrieno-eicosatetraenin 9% 8) Trioctadecatrienin 6% 9) Octadecatrieno-eicosatrieno-octadecatetraenin 8% 10) Other polyunsaturated glycerides 12%