プランクトンの脂質に関する研究 (第2報) : イサザアミの脂質について

概要

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The lipid of a fresh water plankton, Neomysis intermedia Czerniaysky, was examined. Neomysis intermedia (a fresh water plankton) and Neomysis nakazawai Ii (a marine plankton) belong to the same genus, and it is interesting to compare the properties of the lipids each other. The ether extract was obtained from the sun-dried material of the plankton caught at Lake Kasumiga-ura, Ibaragi Prefecture. The content of the lipid was 3.9% of dry matter. Properties of the lipid were as follows : n20D 1.4821, S.V. 150.0, I.V. 109.8, A.V. 76.7, and unsaponifiable matter 17.89%. The fatty acids of the lipid were composed of 42% of saturated acids (C14 4.5%, C16 24.5%, C18 11.5%, C20 1.5%) and 58% of unsaturated acids (C14 1%, C16 11%, C18 18%, C20 and C22 28%). The lipid contained larger amount of saturated C16 and C18 acids, and smaller quantity of unsaturated C20 and C22 acids than that of Neomysis nakazawai Ii, a marine plankton. In comparison with the lipid of some of the fresh water species, the lipid of Neomysis intermedia was poor in the amount of unsaturated C16 and C18 acids, and rich in saturated C16 and C18 acids.
社団法人日本油化学会の論文