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IJMS, Vol. 19, Pages 1829: Lipase Immobilization on Silica Xerogel Treated with Protic Ionic Liquid and its Application in Biodiesel Production from Different Oils

IJMS, Vol. 19, Pages 1829: Lipase Immobilization on Silica Xerogel Treated with Protic Ionic Liquid and its Application in Biodiesel Production from Different Oils

International Journal of Molecular Sciences doi: 10.3390/ijms19071829

Authors: Nayára B. Carvalho Bruna T. Vidal Anderson S. Barbosa Matheus M. Pereira Silvana Mattedi Lisiane dos S. Freitas Álvaro S. Lima Cleide M. F. Soares

Treated silica xerogel with protic ionic liquid (PIL) and bifunctional agents (glutaraldehyde and epichlorohydrin) is a novel support strategy used in the effective immobilization of lipase from Burkholderia cepacia (LBC) by covalent binding. As biocatalysts with the highest activity recovery yields, LBC immobilized by covalent binding with epichlorohydrin without (203%) and with PIL (250%), was assessed by the following the hydrolysis reaction of olive oil and characterized biochemically (Michaelis–Menten constant, optimum pH and temperature, and operational stability). Further, the potential transesterification activity for three substrates: sunflower, soybean, and colza oils, was also determined, achieving a conversion of ethyl esters between 70 and 98%. The supports and the immobilized lipase systems were characterized using Fourier transform infrared spectra (FTIR), scanning electron microscopy (SEM), elemental analysis, and thermogravimetric (TG) analysis.

Authors:   Carvalho, Nayára B.; Vidal, Bruna T.; Barbosa, Anderson S.; Pereira, Matheus M.; Mattedi, Silvana ; Freitas, Lisiane dos S.; Lima, Álvaro S.; Soares, Cleide M. F.
Journal:   International Journal of Molecular Sciences
Volume:   19
edition:   7
Year:   2018
Pages:   1829
DOI:   10.3390/ijms19071829
Publication date:   21-Jun-2018
Facts, background information, dossiers
  • silica
  • epichlorohydrin
  • Transesterification
  • temperature
  • sunflower
  • substrates
  • stability
  • scanning electron m…
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