Over-stabilization of Candida antarctica lipase B by ionic liquids in ester synthesis View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-09

AUTHORS

P. Lozano, T. De Diego, D. Carrié, Michel Vaultier, J.L. Iborra

ABSTRACT

Four different ionic liquids, based on dialkylimidazolium cations associated with perfluorinated and bis(trifluoromethyl)sulfonyl amide anions were used as reaction media for butyl butyrate synthesis catalyzed by free Candida antarctica lipase B at 2% (v/v) water content and 50 °C. Lipase had enhanced synthetic activity in all ionic liquids in comparison with two organic solvents (hexane, and 1-butanol), the enhanced activity being related to the increase in polarity of ionic liquids. The continuous operation of lipase with all the assayed ionic liquids showed over-stabilization of the enzyme. The reuse of free lipase in 1-butyl-3-methylimidazolium hexafluorophosphate in continuous operation cycles showed a half-life time 2300 times greater than that observed when the enzyme was incubated in the absence of substrate (3.2 h), and a selectivity higher than 90%. More... »

PAGES

1529-1533

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1011697609756

DOI

http://dx.doi.org/10.1023/a:1011697609756

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1026864727


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137 https://www.grid.ac/institutes/grid.410368.8 schema:alternateName University of Rennes 1
138 schema:name Université de Rennes 1, Institut de Chimie, UMR CNRS 6510, Campus de Beaulieu, Av. Général Leclerc, 35042, Rennes, France
139 rdf:type schema:Organization
 




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