Abstract
Mono-, di-and trisodium salts of agaricic acid (2-hydroxy-1, 2, 3-nonadecanetricarboxylic acid), a polycarboxylic-type biosurfactant, were prepared by neutralization with sodium methoxide. The properties of salts as detergents such as surface activity, calcium binding capacity, and soil removal ability were examined and compared with those of commercially available synthetic detergents (SDS, LAS) and soaps.The monosodium salt of agaricic acid had the most ability for lowering surface tension. Di-and trisodium salts of agaricic acid exhibited the greatest calcium binding capacity.The soil removal ability of sodium salts of agaricic acid in distilled water was correlated with surface tension. The monosodium salt of agaricic acid was best capable of soil removal. In hard water, the removal ability of trisodium salt of agaricic acid which had the highest calcium binding capacity was retained at the same level as in distilled water although that of SDS, LAS, and soaps in particular decreased remarkably.
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