生体膜の物質透過に関する基礎的研究-2-脂質成分再構成膜の水透過性について-2-

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In the present paper, the authors examined the correlation between the size of the ion with the same sign and valency and the transport of water across cephalin-membrane. They also compared the effect of the ionic surfactants with that of the non-ionic surfactants. The results obtained were as follows: On the 1-1 type anionic surfactant, sodium lauryl sulfate (NaLS), sodium laurate (NaL), the height of transport curve increases with increasing concentration of the solution and its curve has no maximum point in the range of concentration examined (Fig. 1). With the 1-1 type cationic surfactant, trimethyl benzyl ammonium chloride (TBACl), lauryl amine hydrochloride (LAHCl), the transport curve has a maximum point and the size of cation has no remarkable effect on the height of transport curve (Fig. 1). With the 1-1 type electrolyte, sodium acetate (NaAc), soluble saccharin (SaNa), the trans-port curve has a maximum point in the range of concentration examined (Fig. 2). On the non-ionic surfactant, saponin, Span 20, the transport curve lies in the region of the negative osmosis (Fig. 3). The transport curve of the urea is analogous to that of the sucrose (Fig. 4). The transport curves of all surfactants have no special change at their c. m. c. (critical concentration for the formation of micell).
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