Studies on the Slime secreted by marine living Beings,—I.
On the slime secreted by Leiognathus argentea Lacepede.
Shigeru YASAKA and Keiichi MATSUMOTO
When the canned goods of sardine or mackerel are made, the slime are secreted from the fish flesh and it makes afilthy appearance. Is the slime absolutely innoxious? It is a well-known fact that the slime secreted by eel, wels or loach was reduced to powder and was exported as the tonic to Manchuria and North China. Does the case bring to a resolu- tion about this problem?
Leiognathus argentea Lacepede is a fish easy to seize in this district and the slime secreted from the surface is large in quantity. We have made biochemical researches on the slime secreted by Leiognathus argentea Lacepede owing to the fact that the fish are easily caught. The captured fish must be put into the distilled water and it will secret a large quantity of the slime in the excess of its pain. Into the fluid after the fish is taken off, some alcohol is poured, then the precipitation can be seen. If this precipitation is pulverized, and is investigated, this can be recognized as a kind of mucoid.
By means of paper chromatography, we can find that the mucoid contains cystine, arginine, serine, glycine, aspartic acid, alanine, tyrosine, proline, valine, phenylalanine, carbohydrate and
what that. If the powder of this material is extract by the distilled water, and then the acid is added, the precipitation is observed. If the excess of acid is added, the former pre- cipitate disappear.
On that occasion if the distilled water is added afresh, the solution become dilute and the precipitate present itself again. This matter is beyond doubt the mucine.
B u l e i L I n 0 1 t h e F a c u i t y o f F i s h e r i e s . Nagasah U n i v e r s i t y N o . 2 , 1 9 5 4 5 1
緒
長崎県下に欝産する錨や鯖演の健誌を製造する場合に、その調理肉 i r ' r 操作中に相当量の粘質物 を生じ、とれが幾分の不潔感を伴ふととは周知の事 1 隔である
O
更にとれ等の粘質物は魚体の皮膚商からも多量に分泌されるものである
O
一体これ等の魚、現 j 土生きて居る時には何の為に * t l 夜を分泌して居るものであろうか。それ等の