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KMID : 0380019950100010071
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Korean Journal of Biotechnology and Bioengineering
1995 Volume.10 No. 1 p.71 ~ p.77
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Properties of Microbial Surfactant S-acid
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Abstract
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Characteristics of S-acid and its derivatives, as biosurfactants, were investigated. Sodium salt of Sacid(S-lNa) effectively decreased the surface tension to near 30 dyne/cm and showed superior dispersing ability than commercial surfactants such as SDS and Tween 80. The emulsion made by S-1Na could be maintained even with increased concentration of calcium ion. Also the penetrating ability of S -1Na was observed as effective as that of LAS. All derivatives of S-acid were degraded by microorganisms much faster than conventional surfactants. Among the derivatives, S-3Na prevented rust formation as effectively as commercial anti-rust agents did.
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