深海産鮫類肝油の利用に関する研究-VI

アイザメ類 (Centrophorus spp.) の肝油の炭化水素含量について

抄録

Of the “aizame”, Centrophorus spp., several species have been known to exist in waters adjacent to Japan, though detailed taxonomical information has not been elucidated. The deep sea sharks dealt with in this report would consist at least of two different species of the genus Centrophorus.
Listed on Table 1 are information concerning data of fishing, fished areas and major morphometric characters of the samples used for the present experiment. The following have been obtained from the result of chemical analysis of oil extracted from the liver with ether.
Weight of the liver averages about 24.7 per cent in proportion to the body weight of the fish. The oil contents are 75-87 per cent for the liver, and about 10 per cent for the eggs and the kidney respectively. However, the flesh and other internal organs were found with oil but very few (Tabs. 1-4, Figs. 1-3).
The hydrocarbon contents in the liver oil of the fish which are supposed to the highest of all the animal oils that have been known revealed a little individual variance among the samples. When examined with different sexes of the fish, the hydrocarbon contents of the liver oil per kilogram of the body weight proved nearly constant between male and female.