Studies on the Lipid of Plankton. I.

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Abstract
The lipid of a marine plankton, Neomysis nakazawai Ii, was examined. The ether extract was obtained from the sun-dried material of the plankton collected at Funka Bay, Hokkaido. The lipid content was 6.5% of dry matter and its characteristics were as follows : n20D 1.4845, S.V. 163.6, I.V. 181.3, A.V. 132.2, and unsaponifiable matter 10.62%. The fatty acids of this lipid were consisted of 23.0% of saturated acids (C14 5.4%, C16 13.9%, C18 and C>18 3.7%) and 77.0% of unsaturated acids (C14 1.3%, C16 8.9%, C18 15.8%, C20 33.5%, C22 17.5%). Saturated acids were mainly consisted of C18. Unsaturated acids contained large amount of C20 and C22. These results.indicate that this lipid has the same fatty acid composition as that of marine type.

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