Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa | Zendy

Hannah Akinosho | Zendy; Alexandru Dumitrache | Zendy; Jace Natzke | Zendy; Wellington Muchero | Zendy; Sara Jawdy | Zendy; Gerald A. Tuskan | Zendy; Steven D. Brown | Zendy; Arthur J. Ragauskas | Zendy

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Effects of Biomass Accessibility and Klason Lignin Contents during Consolidated Bioprocessing in Populus trichocarpa

Author(s) -

Hannah Akinosho,

Alexandru Dumitrache,

Jace Natzke,

Wellington Muchero,

Sara Jawdy,

Gerald A. Tuskan,

Steven D. Brown,

Arthur J. Ragauskas

Publication year - 2017

Publication title -

acs sustainable chemistry and engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.878

H-Index - 109

ISSN - 2168-0485

DOI - 10.1021/acssuschemeng.7b00449

Subject(s) - lignin , populus trichocarpa , lignocellulosic biomass , biomass (ecology) , cellulase , chemistry , cellulose , bioconversion , clostridium thermocellum , steam explosion , ethanol fuel , biorefining , biofuel , botany , food science , fermentation , pulp and paper industry , biochemistry , biorefinery , microbiology and biotechnology , raw material , agronomy , organic chemistry , biology , engineering , genome , gene

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 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 roughne...

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