抄録
The foaming property of alkylsaccharide surfactants and their effects on protein, skin and scalp were examined, in consideration of their application to personal care products especially detergents. The alkylsaccharides showed a highly stable foaming property as compared with nonionic surfactants containing polyoxyethylene-added type nonionic surfactants. Judging from the results of the measurments of surface pressure, apparent molar volume of hydrophilic group and mobility oh hydrophilic group, we considered that the highly stable foaming property is due to the strong cohesive force at the air-liquid interface of the hydrophilic group of the alkylsaccharide molecules which consisted of a compact sugar structure having low mobility.
The effects of alkylsaccharides on proteins, skin and scalp were next examined. Alkylsaccharides had lower denaturating effect on myoglobin than anionic surfactants, and prevented the denaturation by heat and urea more than noionic surfactants with polyoxyethylene added. Measurements of the loss of amino acids and lipids from the skin during washing showed that less were lost when alkylsaccharides were used than when anionic surfactants were used. Production of dandruff by shampoo containg lauryl surfate triethanolamine salt was less than that produced by shampoo containing alkylsaccharide. These results suggested the high possibility of applying alkylsaccharide to low irritant detergent products (shampoo, body shampoo).
