Related Experiment Video
Updated: Jan 28, 2026
11:39
High-throughput Saccharification Assay for Lignocellulosic Materials
Published on: July 3, 2011
13.7K
Construction of consolidated bio-saccharification biocatalyst and process optimization for highly efficient
Shiyue Liu1,2,3, Ya-Jun Liu1,2, Yingang Feng1,2
11CAS Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China.
Biotechnology for Biofuels
|March 2, 2019
Summary
A new biocatalyst and optimized process significantly enhance consolidated bio-saccharification (CBS) of lignocellulose. This advancement accelerates the conversion of biomass into biofuels and biochemicals, reducing costs and promoting industrial use.
Area of Science:
- Biotechnology
- Biochemical Engineering
- Renewable Energy
Background:
- Lignocellulose solubilization is a key bottleneck in converting biomass to biofuels and biochemicals.
- Consolidated bio-saccharification (CBS) uses whole-cell biocatalysts for simultaneous enzyme production and hydrolysis, but current processes are slow.
Purpose of the Study:
- To develop a more efficient biocatalyst and optimize the consolidated bio-saccharification (CBS) process.
- To reduce the time and cost associated with lignocellulose solubilization for industrial applications.
Main Methods:
- Constructed a recombinant *Clostridium thermocellum* strain (∆pyrF::KBm) as a novel CBS biocatalyst.
- Investigated and optimized key CBS process factors: medium, inoculum size, cultivation, and substrate load.
- Evaluated the effect of adding free hemicellulases to stimulate the saccharification process.
Main Results:
- The optimized CBS process using the new biocatalyst was 50% faster with pretreated wheat straw.
- Achieved a high sugar yield of 0.795 g/g and a saccharification level of 89.3%.
- Identified the need for enhanced whole-cell hemicellulase activity.
Conclusions:
- Developed a novel biocatalyst and optimized process for consolidated bio-saccharification (CBS).
- Confirmed CBS as a feasible and cost-efficient strategy for lignocellulose solubilization.
- This advancement significantly promotes the industrial utilization of lignocellulosic biomass.
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