Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa
Abstract
The bacterium Clostridium thermocellum offers a distinct and integrated approach to ethanol production through consolidated bioprocessing (CBP). The Simons’ stain technique, which assays the accessibility of lignocellulosic biomass, has been traditionally applied to fungal cellulase systems; however, its application to CBP has not been fully explored. For this reason, the structural properties of eight Populus trichocarpa with either high or low biomass densities were compared in this paper to determine bioconversion differences during separate hydrolysis and fermentation (SHF) and CBP with C. thermocellum. Simons’ staining generally identifies low density poplar as more accessible than high density poplar. Additionally, low density P. trichocarpa generally contained less Klason lignin than high density poplar. SHF and CBP treatments consistently identified BESC-7 (high density, low accessibility, low surface roughness) as a low ethanol yielding biomass and GW-9914 (low density, high accessibility, high surface roughness) as a high ethanol yielding biomass. Upon further investigation, BESC-7 also contained a high Klason lignin content (~25%), while GW-9914 had a low lignin content (~20%). Cellulose degree of polymerization (DP) measurements exhibited a weak linear correlation with accessibility (r2 = 0.17). Finally, therefore, the ethanol yields were correlated with accessibility and lignin content extremes but not cellulose DP.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center; Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemistry and Biochemistry. Renewable BioProducts Inst.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Biosciences Division. UT-ORNL Joint Inst. of Biological Science
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioSciences Division. Plant Systems Biology Group
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center. Biosciences Division. UT-ORNL Joint Inst. of Biological Science; Univ. of Tennessee, Knoxville, TN (United States). Center for Renewable Carbon. Dept. of Forestry. Dept. of Chemical and Biomolecular Engineering
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Contributing Org.:
- Georgia Inst. of Technology, Atlanta, GA (United States); Univ. of Tennessee, Knoxville, TN (United States)
- OSTI Identifier:
- 1362259
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Sustainable Chemistry & Engineering
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 6; Journal ID: ISSN 2168-0485
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; Clostridium thermocellum; consolidated bioprocessing; ethanol; Klason lignin; Simons’ stain; wood density
Citation Formats
Akinosho, Hannah, Dumitrache, Alexandru, Natzke, Jace, Muchero, Wellington, Jawdy, Sara S., Tuskan, Gerald A., Brown, Steven D., and Ragauskas, Arthur J.. Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa. United States: N. p., 2017.
Web. doi:10.1021/acssuschemeng.7b00449.
Akinosho, Hannah, Dumitrache, Alexandru, Natzke, Jace, Muchero, Wellington, Jawdy, Sara S., Tuskan, Gerald A., Brown, Steven D., & Ragauskas, Arthur J.. Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa. United States. https://doi.org/10.1021/acssuschemeng.7b00449
Akinosho, Hannah, Dumitrache, Alexandru, Natzke, Jace, Muchero, Wellington, Jawdy, Sara S., Tuskan, Gerald A., Brown, Steven D., and Ragauskas, Arthur J.. Wed .
"Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa". United States. https://doi.org/10.1021/acssuschemeng.7b00449. https://www.osti.gov/servlets/purl/1362259.
@article{osti_1362259,
title = {Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa},
author = {Akinosho, Hannah and Dumitrache, Alexandru and Natzke, Jace and Muchero, Wellington and Jawdy, Sara S. and Tuskan, Gerald A. and Brown, Steven D. and Ragauskas, Arthur J.},
abstractNote = {The bacterium Clostridium thermocellum offers a distinct and integrated approach to ethanol production through consolidated bioprocessing (CBP). The Simons’ stain technique, which assays the accessibility of lignocellulosic biomass, has been traditionally applied to fungal cellulase systems; however, its application to CBP has not been fully explored. For this reason, the structural properties of eight Populus trichocarpa with either high or low biomass densities were compared in this paper to determine bioconversion differences during separate hydrolysis and fermentation (SHF) and CBP with C. thermocellum. Simons’ staining generally identifies low density poplar as more accessible than high density poplar. Additionally, low density P. trichocarpa generally contained less Klason lignin than high density poplar. SHF and CBP treatments consistently identified BESC-7 (high density, low accessibility, low surface roughness) as a low ethanol yielding biomass and GW-9914 (low density, high accessibility, high surface roughness) as a high ethanol yielding biomass. Upon further investigation, BESC-7 also contained a high Klason lignin content (~25%), while GW-9914 had a low lignin content (~20%). Cellulose degree of polymerization (DP) measurements exhibited a weak linear correlation with accessibility (r2 = 0.17). Finally, therefore, the ethanol yields were correlated with accessibility and lignin content extremes but not cellulose DP.},
doi = {10.1021/acssuschemeng.7b00449},
journal = {ACS Sustainable Chemistry & Engineering},
number = 6,
volume = 5,
place = {United States},
year = {Wed Apr 26 00:00:00 EDT 2017},
month = {Wed Apr 26 00:00:00 EDT 2017}
}
Web of Science
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