ウナギ体表面粘質物とシュモクザメ軟骨とから得られたsialic acid類似物質について

概要

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It has been reported by the authors1) that the sialic acid-like substances (positive substance to "direct EHRLICH reaction") were obtained from both the external mucous substance of an eel, Anguilla japonica, and the cartilage of a hammerhead, Sphyrna zygaena. The present work was undertaken to make clear the chemical properties of these two substances. From the absorption spectra of those substances by some colour reactions specific for sialic acid, the ultraviolet absorption spectra of those and the acid- or alkali-treated derivatives of N-acetylneuraminic acid, and from the paper chromatograms of the degradation products of the sialic acid-like substances, it was suggested that the two substances are the degradation products of the sialic acid by the mild acid hydrolysis during the extraction from the materials. It seems most likely that the sialic acid-like substance of an eel is a heavily degraded product and that of a hammerhead a slightly degraded one.
社団法人日本水産学会の論文