A kinetic study of the lipase-catalyzed ethanolysis of two short-chain triradylglycerols: Alkylglycerols vs. triacylglycerols
Entity
UAM. Departamento de Química Física AplicadaPublisher
Elsevier B.VDate
2010-06-01Citation
10.1016/j.molcatb.2010.02.010
Journal of Molecular Catalysis B: Enzymatic 64.1-2 (2010): 101–106
ISSN
1381-1177 (print); 1873-3158 (online)DOI
10.1016/j.molcatb.2010.02.010Funded by
This work was supported by the projects AGL2006-02031/ALI and AGL2008-05655 by Ministerio de Ciencia (Spain) and also by Comunidad Autonoma de Madrid (ALIBIRD, project number S-505/AGR-0153) and Consolider-Ingenio FUN-C-FOOD (CSD2007- 00063).Project
Comunidad de Madrid. S2009/AGR-1469/ALIBIRDEditor's Version
http://dx.doi.org/10.1016/j.molcatb.2010.02.010Subjects
Alkylglycerols; Butyric; Candida antarctica; Ethanolysis; Kinetics model; Lipase; QuímicaNote
This is the author’s version of a work that was accepted for publication in Journal of Molecular Catalysis B: Enzymatic. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Catalysis B: Enzymatic, 64, (2010) DOI 10.1016/j.molcatb.2010.02.010Rights
© 2010 Elsevier B.V. All rights reserved.Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
Lipase-catalyzed ethanolysis of two short-chain triradylglycerols, namely tributyrin and 2,3-dibutyroil-
1-O-alkylglycerols, have been studied. Much faster rate of reaction for the ethanolysis of tributyrin than
that of 2,3-dibutyroil-1-O-alkylglycerols was attained. A kinetic model for the rate of release of ethyl
butyrate and for the inactivation of the lipase has been also studied. The parameter corresponding to
the release of ethyl butyrate was one order of magnitude higher for ethanolysis of tributyrin than the
corresponding of 2,3-dibutyroil-1-O-alkylglycerols.
On the contrary, the stability of Novozym 435 during ethanolysis of 2,3-dibutyroil-1-O-alkylglycerols
was higher than the corresponding of tributyrin.
At the reaction conditions under study, both ethanolysis reactions take place with high selectivity
and yield monoesterified alkylglycerols and sn-2 monobutyrin as the main acylglycerols in the reaction
mixtures.
Files in this item
Google Scholar:Vázquez, Luis Nuñez
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Fernández, Óscar
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Blanco, Rosa María
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Señorans Rodríguez, Fco. Javier
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Reglero Rada, Guillermo J.
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Torres Olivares, Carlos Fernando
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