Logo image
Back
Enzymatic hydrolysis of biomass with recyclable use of cellobiase enzyme immobilized in sol–gel routed mesoporous silica
Journal article   Peer reviewed

Enzymatic hydrolysis of biomass with recyclable use of cellobiase enzyme immobilized in sol–gel routed mesoporous silica

Sudipto Das, David Berke-Schlessel, Hai-Feng Ji, John McDonough and Yen Wei
Journal of molecular catalysis. B, Enzymatic, v 70(1), pp 49-54
2011
DOI: https://doi.org/10.1016/j.molcatb.2011.02.003
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Biomass hydrolysis Cellobiase enzyme Enzyme immobilization Mesoporous silica Sol–gel reaction
[Display omitted] ► Immobilized cellobiase enzyme in hydrolysis of biomass (cellulose) for generating cellulosic ethanol. ► Up to 81% hydrolysis efficiency of immobilized cellobiase, with respect to free cellobiase enzyme. ► Immobilized cellobiase enabled recycling and re-use of the enzyme. In this work, a new immobilized cellobiase enzyme system was used in the enzymatic hydrolysis of biomass for the generation of cellulosic ethanol. The application of the immobilized cellobiase enzyme enabled easy post-hydrolysis separation of the enzyme from the reaction mixture. The cellobiase enzyme was immobilized in porous solid silica host material via acid catalyzed non-surfactant templated sol–gel reaction of tetraethyl orthosilicate (TEOS). The pore size and porosity of the host material were controlled by varying the template ( d-fructose) content. The immobilized cellobiase enzyme samples when used in the hydrolysis of pre-treated biomass yielded hydrolysis efficiency up to 74% (with FeCl 3 pre-treated biomass) and 81% (with oxalic acid pre-treated biomass) when compared to hydrolysis with free cellobiase enzyme. The solid immobilized enzyme samples could be easily recycled from the reaction mixture after the hydrolysis reaction. When re-used in multiple batches, the immobilized samples retained their enzymatic activity in biomass hydrolysis. The re-usability of the immobilized cellobiase with retained activity would actively bring down the enzyme cost. Thus, our immobilized cellobiase enzyme opens up great potential in the enzymatic hydrolysis of biomass for generating cellulosic ethanol, as it leads to overall process cost reduction.

Metrics

13 Record Views
44 citations in Web of Science
43 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#12 Responsible Consumption & Production
#7 Affordable and Clean Energy

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
Web of Science research areas
Biochemistry & Molecular Biology
Chemistry, Physical
Logo image