Comparative Surface Activities of Di- and Trisaccharide Fatty Acid Esters

Sucrose, maltose, leucrose, maltotriose, and β-D-dodecylmaltoside fatty acid esters with acyl chains having 12 to 18 carbon atoms were enzymatically synthesized and their surface properties −critical micelle concentration, surface tension in water, and interfacial tension between water and xylene− w...

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Bibliographic Details
Published in:Langmuir 2002-02, Vol.18 (3), p.667-673
Main Authors: Ferrer, Manuel, Comelles, Francisco, Plou, Francisco J, Cruces, M. Angeles, Fuentes, Gloria, Parra, Jose Luis, Ballesteros, Antonio
Format: Article
Language:English
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Summary:Sucrose, maltose, leucrose, maltotriose, and β-D-dodecylmaltoside fatty acid esters with acyl chains having 12 to 18 carbon atoms were enzymatically synthesized and their surface properties −critical micelle concentration, surface tension in water, and interfacial tension between water and xylene− were evaluated. The synthesized esters present critical micelle concentration (CMC) values in the range 2−250 μM with surface tension values ranging from 24.5 to 36.5 mN/m, and interfacial tension values from 1.0 to 9.4 mN/m depending on the compound. For the same acyl chain, CMC values were in the order maltotriose < leucrose < maltose < sucrose. The longest the fatty acid displays the lowest CMC, showing a decrease of one order of magnitude when the chain length was increased by six carbon atoms. β-D-dodecylmaltoside monoesters exhibited high efficiency as water-in-oil emulsifiers. All the newly synthesized di- and trisaccharide-based surfactants displayed better surface-active properties and higher solubility compared with similar monosaccharide esters.
ISSN:0743-7463
1520-5827
DOI:10.1021/la010727g