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Título

Micro-scale procedure for enzyme immobilization screening and operational stability assays

Autor Fernández Arrojo, Lucía ; Santos-Moriano, Paloma ; Rodríguez-Colinas, Bárbara ; Ballesteros Olmo, Antonio ; Plou Gasca, Francisco José
Palabras clave Biotransformations
Enzyme immobilization
Enzyme carriers
Immobilized biocatalysts
Inulinase
Operational stability
Fecha de publicación 2015
EditorSpringer
Citación Biotechnology Letters (2015) http://dx.doi.org/10.1007/s10529-015-1835-z
ResumenA simple and inexpensive methodology, based on the use of micro-centrifuge filter tubes, is proposed for establishing the best enzyme immobilization conditions. The immobilized biocatalyst is located inside the filter holder during the whole protocol, thus facilitating the incubations, filtrations and washings. This procedure minimizes the amount of enzyme and solid carrier needed, and allows exploring different immobilization parameters (pH, buffer concentration, enzyme/carrier ratio, incubation time, etc.) in a fast manner. The handling of immobilized enzymes using micro-centrifuge filter tubes can also be applied to assess the apparent activity of the biocatalysts, as well as their reuse in successive batch reaction cycles. To illustrate the usefulness of the proposed methodology, the determination of the optimum pH for the immobilization of an inulinase (Fructozyme L) on two anion-exchange polymethacrylate resins (Sepabeads EC-EA and Sepabeads EC-HA) was exemplified.
Versión del editorhttp://dx.doi.org/10.1007/s10529-015-1835-z
URI http://hdl.handle.net/10261/115673
DOI10.1007/s10529-015-1835-z
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