Unusual occurrence of diacyl glyceryl ethers in liver lipids from two species of gonatid squids.

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  • テカギイカ科2種の肝臓脂質中の多量のジアシルグリセリルエーテルについて
  • テカギイカ科2種の肝臓脂質中の多量のジアシルグリセリルエーテルについて〔英文〕
  • テカギイカカ 2シュ ノ カンゾウ シシツチュウ ノ タリョウ ノ ジアシルグ

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Abstract

The lipid compositions of the livers of two species of gonatid squids, Berryteuthis magister and Gonatopsis makko, caught in the Japan Sea, were investigated.<br>The livers yielded 22.4% lipids for B. magister and 28.0% for G. makko, each of which contained an unusually high percentage of diacyl glyceryl ethers (49.1% and 69.5%, respectively) and small amounts of steryl esters (24.0% and 16.0%), triglycerides (7.1% and 0.9%) and phospholipids (8.6% and 3.5%).<br>In the two species, the component glyceryl ethers were reasonably similar in composition, consisting mainly of saturates (64.6-70.1%) and monoenes (27.7-33.0%) of 14-22 carbon atoms for the alkyl moiety. The principal components were as follows: 16:0 (58.3-58.5%), 18:1 (23.2-27.7%), 18:0 (4.0-7.6%), and 20:1 (3.4-4.1%). In both species, the fatty acid compositions of diacyl glyceryl ethers consisted predominantly of monoenes with 18:1 acid (28.2-46.6%) as the main component.<br>For B. magister, few differences were found in the percentages of the component fatty acids among the lipid classes of diacyl glyceryl ethers, steryl esters, triglycerides and phospholipids; and for G. makko few differences were found among diacyl glyceryl ethers, steryl esters and phospholipids.

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