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Título : Characterization and application of a sterol esterase immobilized on polyacrylate epoxy-activated carriers (DilbeadsTM)
Autor : Torres, Pamela ; Datla, A.; Rajasekar, V. W.; Zambre, S.; Ashar, T.; Yates Buxcey, Malcolm ; Rojas-Cervantes, M. Luisa ; Calero-Rueda, Olga; Barba, Víctor ; Martínez Hernández, María Jesús; Ballesteros Olmo, Antonio ; Plou Gasca, Francisco José
Palabras clave : Inmovilizacion
Enzimas
Esteres de colesterol
Pitch
Esterasas
Dilbeads
Microscopia confocal
Poliacrilato
Industria papelera
Fecha de publicación : 2008
Editor: Elsevier
Citación : Catalysis Communications 9(4): 539-545(2008)
Resumen: The sterol esterase from the ascomycete Ophiostoma piceae was immobilized on novel polyacrylate-based epoxy-activated carriers (DilbeadsTM). Six supports with particle sizes between 120-165 micrometers were prepared varying the composition of monomers, crosslinkers and porogens. Their surface areas and porosities were determined by N2 adsorption and mercury intrusion porosimetry. The pore volumes ranged from 0.63 to 1.32 cm3/g, but only DilbeadsTM RS and NK had narrow pore size distributions (with maxima at 33.5 and 67.0 nm, respectively). The distribution of the enzyme in the support was studied by fluorescence confocal microscopy. The immobilized esterase on DilbeadsTM TA showed a significant pH and thermal stability and was assayed in the continuous hydrolysis of cholesteryl esters -present in the pulp industry process waters-.
Versión del editor: http://dx.doi.org/10.1016/j.catcom.2007.07.014
URI : http://hdl.handle.net/10261/5687
DOI: 10.1016/j.catcom.2007.07.014
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