緑藻類の化学的研究-III : 「アオノリ」，「アナアオサ」およびその粘質物の無機成分について

概要

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Succeeding to the previous paper, in which the elemental composition of ashes of a red seaweed, Gloiopeltis furcata, and its mucilage was given, the present report deals with that of green seaweeds. The specimens were two kinds of green seaweed, Enteromorpha compressa, and Ulva pertusa, collected from Hiroshima Bay in January and May and mucilages extracted with hot water. These materials were ashed in an oven below 500°C, and the mineral components were analyzed by the usual method (Table 1) and the arc spectrum analysis (Table 2). Some differences were observed between these green seaweeds and the red seaweed previously tested in the content of Mg and Fe, the former being more rich in the metals, especially in Mg. The arc spectrum analysis showed the presence of trace elements such as Ti, Cu, Mn and B in both species. The main components in the ashes of mucilages were found to be Mg, Na and S, and the last element was proved to be present as sulfate. These results suggest that the mucilage of green seaweed consists of Na and Mg salts of sulfate ester of polysaccharide, as that of red seaweed does.
公益社団法人日本水産学会の論文