リン脂質溶液の物理化学的研究 : 第2報 Lecithinと金属塩との結合について

概要

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In ordar to get more certain information of the properties of lecithin-metalsalt combinations, following experiments were curried out. (1) Potentiomelric titration patterns of lecithin, lecithin-metalsalts and metal-salts in 90% ethanolic solution were measured, and it was recognized the combining forces of the complexes were not any coordination linkges. (2) Infra-red absorption spectrum were recored under the nujiol method to know the sait of the combination. And it was observed The absorption band 1100cm^<-1> coresponded to P=O double bond, was shifted about 30cm^<-1> to the lower side, and 970 cm^<-1> band were removed slightly to more higher side. But the absorption bands coresponded to the choline group of lecithin could not be recognized. From these observation, it was assumed that the combination forces of the complex was a kind of Van der Waals forces, thus the positive ion of metalsalt was binded to the negative chorge of phosphoric group of lecithin.
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