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Title: Immobilization of cellulase on a silica gel substrate modified using a 3-APTES self-assembled monolayer

Journal Article · · SpringerPlus

Cellulase was immobilized onto silica gel surfaces pretreated with (3-aminopropyl) triethoxy-silane (3-APTES), and glutaraldehyde (GA) was used as a cross-linker. A carboxymethyl cellulose sodium salt (CMC) solution was used for activity experiments. Protein assay was performed to determine the mass immobilized and compare with free enzyme. Cellulase was successfully demonstrated to be immobilized on the modified silica gel surface, and no detectable amount of enzyme was stripped off during the hydrolysis of the CMC solution. The specific activity of the immobilized cellulase is 7 ± 2 % compared to the similar amount of free cellulase. Significant activity over multiple reuses was observed. The seventh batch achieved 82 % activity of the initial batch, and the fifteenth batch retained 31 %. Lastly, it was observed that the immobilized cellulase retained 48 % of its initial activity after 4 days, and 22 % even after 14 days.

Research Organization:
Louisiana Tech Univ., Ruston, LA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0003120
OSTI ID:
1272638
Alternate ID(s):
OSTI ID: 1242890
Journal Information:
SpringerPlus, Journal Name: SpringerPlus Vol. 5 Journal Issue: 1; ISSN 2193-1801
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Switzerland
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (9)

Physicochemical and catalytic properties of acylase I from aspergillus melleus immobilized on amino- and carbonyl-grafted stöber silica journal January 2018
Magnetic Recovery of Cellulase from Cellulose Substrates with Bare Iron Oxide Nanoparticles journal January 2019
Inulinase immobilization on polyethylene glycol/polypyrrole multiwall carbon nanotubes producing a catalyst with enhanced thermal and operational stability journal July 2019
Immobilization of alcohol dehydrogenase on ceramic silicon carbide membranes for enzymatic CH 3 OH production: ADH immobilization on silicon carbide journal May 2018
Fabrication of iron oxide nanoparticles, and green catalytic application of an immobilized novel iron Schiff on wood cellulose journal December 2017
Continuous flow biocatalysis journal January 2018
QCM-D and NanoTweezer measurements to characterize the effect of soil cellulase on the deposition of PEG-coated TiO 2 nanoparticles in model subsurface environments journal January 2018
Optical and structural properties of curcuminoids extracted from Curcuma longa L. for hybrid white light diode journal October 2018
A study on the enzymatic properties and reuse of cellulase immobilized with carbon nanotubes and sodium alginate journal July 2019

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