魚体表面の粘性物質に関する研究-8-

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In the previous report1) the neutral sugars of mucus-polysaccharides from fishes were investigated. In the present work the basic and acidic sugar-fractions from 6 species of fishes were analyzed quantitatively. The components of basic sugars were found to be galactosamine and glucosamine (Fig. 1). The content of galactosamine was nearly equal to or higher than glucosamine except ray, Raja hollandi, in which glucosamine was higher in amount than galactosamine. In eel galactosamine was present 10 fold the quantity as much glucosamine (Table 1). Acidic sugar was found to be a minute quantity in all the species tested as compared with neutral and basic sugar. Judging from the absorption curve of the reaction product of the acidic fraction with DISCHE'S reagent (Fig. 2) and the previous results9), it was reasonably concluded that the principal component of the acidic fraction was glucuronic acid.
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