著者

清水 千秋 福原 忠信

出版者

長崎大学水産学部

雑誌

長崎大学水産学部研究報告 (ISSN:05471427)

巻号頁・発行日

vol.10, pp.25-37, 1961-01-31

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The quantitative compositions of fatty scids in the blubber oils and head oils of Tursiops sp. (Hando Iruka), Pseudorca sp. (Okigondo Kuzira) and Grampus sp. (Hanagondo Kuzira) were determined (Table 7a, 7b and 7c). In this analysis, fatty acids were previously fractionated to the liquid and solid acids by the Urea adduct-MeOH method1) before fractional distillations (Table 2a, 2b and 2c). After the fractional distillations, the number of double bond of the methyl ester of unsaturated fatty acids were estimated by the paper chromatography of their mercuric compounds²). On the fatty acids of their blubber oils, the saturated and unsaturated acids were about 20% and 80% respectively, and about 80% of them are C₁₆, C₁₈ and C₂₀ acids. On the Pseudorca sp. and Grampus sp,, the fatty acids of C₁₆ dominate (about 40%), and on Tursiops sp. the fatty acids of C₁₈ are main part (about 34%). The saturated fatty acids of their head oils are about 75% of Tursiops sp. and Pseudorca sp., but are 52% of Grampus sp., and the unsaturated fatty acids of one double bond are about 20% of the former and about 50% of the latter. The saturated fatty alcohols are about 92% of the unsaponifiable matter and 85% of them is hexadecanol in the head oil of Pseudorca sp. (Table 9).

著者

清水 千秋 福原 忠信

出版者

長崎大学水産学部

雑誌

長崎大学水産学部研究報告 = Bulletin of the Faculty of Fisheries, Nagasaki University (ISSN:05471427)

巻号頁・発行日

no.10, pp.25-37, 1961-01-31

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The quantitative compositions of fatty scids in the blubber oils and head oils of Tursiops sp. (Hando Iruka), Pseudorca sp. (Okigondo Kuzira) and Grampus sp. (Hanagondo Kuzira) were determined (Table 7a, 7b and 7c). In this analysis, fatty acids were previously fractionated to the liquid and solid acids by the Urea adduct-MeOH method1) before fractional distillations (Table 2a, 2b and 2c). After the fractional distillations, the number of double bond of the methyl ester of unsaturated fatty acids were estimated by the paper chromatography of their mercuric compounds²). On the fatty acids of their blubber oils, the saturated and unsaturated acids were about 20% and 80% respectively, and about 80% of them are C₁₆, C₁₈ and C₂₀ acids. On the Pseudorca sp. and Grampus sp,, the fatty acids of C₁₆ dominate (about 40%), and on Tursiops sp. the fatty acids of C₁₈ are main part (about 34%). The saturated fatty acids of their head oils are about 75% of Tursiops sp. and Pseudorca sp., but are 52% of Grampus sp., and the unsaturated fatty acids of one double bond are about 20% of the former and about 50% of the latter. The saturated fatty alcohols are about 92% of the unsaponifiable matter and 85% of them is hexadecanol in the head oil of Pseudorca sp. (Table 9).

著者

ア ラピチウイブラヒム 清水 千秋

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.50, no.5, pp.815-820, 1984

被引用文献数

3 15

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In order to find an effective use of the Antarctic krill <i>Euphausia superba</i> meal, the study was conducted to examine the nutritional quality and the gorwth promoting effect of the whole body krill meal and the non-muscle krill meal as supplement in the diets of red sea bream <i>Chrysophrys major</i>, Japanese eel <i>Anguilla japonica</i>, and gray mullet <i>Mugil cephalus.</i> The feeding experiments were carried out with test diets supplemented with 5%, 10% and 20% of the whole body krill meal and the non-muscle krill meal. The results showed that the high percentages of the whole body krill meal in the diet resulted in the increments of the body weight which were not significantly different from 5% non-muscle krill meal diet. Hence the non-muscle krill meal had a superior value for fish growth than the whole body krill meal. It is postulated that some factors that promote growth are present predominantly in the non-muscle krill meal. Accordingly chemical analyses such as general composition, amino acid composition and mineral composition of the krill meals and the white fish meal were conducted, however, noticeable difference could not be found between the two krill meals.

著者

中村 良一 中原 元和 石井 紀明 上田 泰司 清水 千秋

出版者

公益社団法人 日本水産学会

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.45, no.6, pp.757-762, 1979-06-25 (Released:2008-02-29)

参考文献数

18

被引用文献数

3 1

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The relations between the accumulation-elimination of radionuclides and the constituent materials of marine algae were studied to determine more precisely the mechanism of the radioactive contamination of marine organisms. This will increase the information about the behavior of radionuclides in marine organisms in relation to the environmental conditions (temperature, physico-chemical state of radioisotope, and so on) and the biological conditions (feeding habits, species, and so on). Eisenia contaminated by 137Cs and 106Ru-106Rh was fractionated by solvent extraction into 6 fractions. The largest portion of 137Cs was in the boiling water fraction; 106Ru-106Rh was most extracted by 24% KOH solution. Elution patterns by Sephadex G-100 gel-filtration of samples differed largely from each other, both among the 3 kinds of radionuclides and between the 2 species of the algae. Therefore, the accumulation of the radionuclides by the marine algae was proved to be not only due to a physical adsorption to the surface of the algae but also to the biological combining of the radionuclides with the constituents of the algae. Furthermore, it was found that radionuclides which combine with a few constituents of alga are not eliminated equally. This is considered to be useful for the physiological analysis of elimination curves.