水産動物燐脂質に関する研究 : (第4報)イワシクジラ心臓筋肉のレシチン,ケファリン,中性脂肪及び不鹸化物について

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Lecithin (I), cephalin (II), and acetone-soluble (III) fractions were separated from the heart of a rorqual as presented in Figure 1. The following characteristics were found, I: P 4.13%; N 1.76%; choline 14.57%; iodine value 91.6; N:P=1:1.06 and N:choline=1:0.96; II: P 2.66%; N 1.37%; iodine value 122.3; N:P=1:0.88, ethanolamine 4.90%; and serine 2.52%; and III: acid value 1.0; sapon. value 127.8; iodine value 130.5 and unsaponifiable material 43.8%. The composition of component fatty acids of I and II were estimated spectrophotometrically after they had been converted to conjugated acids by KOH-glycol reagent. The contents of saturated, monoethylenic, dienoic, trienoic, tetraenoic, pentaenoic and hexaenoic acids were: 20.6, 52.9, 4.1, 6.1, 7.6, 6.2 and 2.5% respectively, in I; and 26.4, 35.0, 0.8, 16.5, 10.0, 8.2 and 3.1% respectively, in II. The composition of component fatty acids of III was as follows: myristic 2%; palmitic 12%; stearic 12%; zoomaric, 4%; oleic 24%; eicosenoic 8%; linoeic+linolenic 6%; arachidonic 16%; and clupanodonic 16%. From the unsaponifiable material of III, cholesterol was identfied while the presence of cetyl, octadecyl, zoomaryl, oleyl, gadoleyl, and C20-highly unsaturated alcohols was presumable.