Immobilization and characterization of a thermostable beta-xylosidase to generate a reusable biocatalyst (Articolo in rivista)

Type
Label
  • Immobilization and characterization of a thermostable beta-xylosidase to generate a reusable biocatalyst (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.enzmictec.2006.03.010 (literal)
Alternative label
  • Morana A.; Mangione A.; Maurelli L.; Fiume I.; Paris O.; Cannio R.; Rossi M. (2006)
    Immobilization and characterization of a thermostable beta-xylosidase to generate a reusable biocatalyst
    in Enzyme and microbial technology; Elsevier, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Morana A.; Mangione A.; Maurelli L.; Fiume I.; Paris O.; Cannio R.; Rossi M. (literal)
Pagina inizio
  • 1205 (literal)
Pagina fine
  • 1213 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 39 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Protein Biochemistry - C.N.R., Via P. Castellino 111, 80131, Naples, Italy (literal)
Titolo
  • Immobilization and characterization of a thermostable beta-xylosidase to generate a reusable biocatalyst (literal)
Abstract
  • The thermostable beta-xylosidase from Sulfolobus solfataricus, expressed in Escherichia coli, was immobilized by entrapment into alginate with full recovery of activity and tested for xylose production from xylan hydrolysates. Since the recombinant activity was also cell bound, alginate beads entrapping E. coli whole cells were also prepared. The immobilized preparations exhibited higher thermostability at 90 °C compared to their free counterparts. The half-lives of the immobilized enzyme and cells were 21 and 23 h, respectively, while half of the inactivation was reached after 10 and 11.5 h for free enzyme and whole cells. Interestingly, thermophilicity increased from 85 up to 100 °C and the optimal pH shifted to higher values for immobilized preparations. Results obtained from xylo-oligosaccharides hydrolysis in subsequent batch experiments of recycling, indicated that the immobilized enzyme had good operational stability, retaining 84% of its initial activity after four cycles. Here we report on the immobilization of the beta-xylosidase into alginate and its characterization. (literal)
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