タチウオ魚鱗箔に関する研究-III : 生箔中の脂質について

概要

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The research was carried out on the lipids in the lustrous particles, which has been considered to be main impurities in the preparation of pearl essence. Results obtained were as follows: 1) Yield of lipids extracted with alcohol and ether was 12.4% of the raw particles. 2) It was found that about 40% of fatty acid in the oil obtained from acetone-treatment of lipids was solid fatty acid and the other was liquid one. In the latter, moreover, about 45% of the fatty acid was highly unsaturated one. 3) About half of unsaponifiable matter which was contained in about 20% of oil, consisted of cholesterol and another half was lowly unsaturated alcohol. 4) Acetone-insoluble matter obtained from the lipids in about 9% of it, seemed to be phosphatides from the following results; that is, phosphorus and nitrogen contents of the insoluble matter, and the presence of cholin which, in hydrolyzate of the insoluble matter, was ascertained by paper chromatographic analysis and the other experimental results. Furthermore, boiling alcohol soluble and ether insoluble portion was also assumed to contain a phosphatides-like matter. From what was described above, it seemed to be more important items in the prccess of refining the particles to remove the lipids, especially phosphatides from the raw particles.