Microemulsions as a tool for the regioselective lipase-catalysed esterification of aliphatic diols |
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Authors: | J. B. Macris H. Stamatis F. N. Kolisis |
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Affiliation: | (1) Biosystems Technology Laboratory, Chemical Engineering Department, Division IV, National Technical University of Athens, Zographou Campus, 15700 Athens, Greece, GR;(2) Biosystems Technology Laboratory, Chemical Engineering Department, Division IV, National Technical University of Athens, 5, Iroon Polytechniou str., Zographou Campus, 15700 Athens, Greece Fax: (301) 7723161 e-mail: kolisis @orfeas.chemeng.ntua.gr, GR |
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Abstract: | The efficiency of Humicola lanuginosa and Candida cylindracea lipases to catalyse the regioselective esterification of butane-1,3-diol with oleic acid has been demonstrated in water-in-oil microemulsion systems stabilized with sodium (bis-2-ethylhexyl) sulphosuccinate as a surfactant in isooctane. Mono- and diesters were selectively synthesized with high reaction rates. The product distribution depends on the positional specificity of the lipases. Water-in-oil microemulsions appear to be an effective and fast system for the regioselective enzymatic esterification of diols. Received: 29 April 1996 / Received revision: 29 July 1996 / Accepted: 5 August 1996 |
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