Morphological changes in the cellulose and lignin components of biomass occur at different stages of steam pretreatment

Pingali, Sai Venkatesh; O'Neill, Hugh Michael; Nishiyama, Yoshiharu; He, Lilin; Melnichenko, Yuri B.; Urban, Volker S.; Petridis, Loukas; Davison, Brian H.; Langan, Paul

doi:10.1007/s10570-013-0162-6

Title: Morphological changes in the cellulose and lignin components of biomass occur at different stages of steam pretreatment

Journal Article · Thu Jan 09 00:00:00 EST 2014 · Cellulose (Online)

DOI:https://doi.org/10.1007/s10570-013-0162-6· OSTI ID:1214458

Pingali, Sai Venkatesh ^[1]; O'Neill, Hugh Michael ^[1]; Nishiyama, Yoshiharu ^[2]; He, Lilin ^[1]; Melnichenko, Yuri B. ^[1]; Urban, Volker S. ^[1]; Petridis, Loukas ^[1]; Davison, Brian H. ^[1]; Langan, Paul ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Centre de Recherches sur les Macromolecules Vegetales (CERMAV-CNRS) (France)

Morphological changes to the different components of lignocellulosic biomass were observed as they occurred during steam pretreatment by placing a pressure reaction cell in a neutron beam and collecting time-resolved neutron scattering data. Changes to cellulose morphology occurred mainly in the heating phase, whereas changes in lignin morphology occurred mainly in the holding and cooling phases. During the heating stage, water is irreversibly expelled from cellulose microfibrils as the elementary fibrils coalesce. During the holding phase lignin aggregates begin to appear and they increase in size most noticeably during the cooling phase. This experiment demonstrates the unique information that in situ small angle neutron scattering studies of pretreatment can provide. This approach is potentially useful in optimizing the heating, holding and cooling stages of pretreatments to allow the exact size and nature of lignin aggregates to be controlled in order to enhance enzyme accessibility to cellulose and therefore the efficiency of biomass conversion.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1214458

Journal Information:: Cellulose (Online), Vol. 21, Issue 2; ISSN 1572-882X

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 31 works

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References (8)

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Cited By (5)

Molecular-level driving forces in lignocellulosic biomass deconstruction for bioenergy Petridis, Loukas; Smith, Jeremy C. Nature Reviews Chemistry, Vol. 2, Issue 11 https://doi.org/10.1038/s41570-018-0050-6	journal	October 2018
On the solution structure of kraft lignin in ethylene glycol and its implication for nanoparticle preparation Yang, Mingkun; Zhao, Wenwen; Singh, Seema Nanoscale Advances, Vol. 1, Issue 1 https://doi.org/10.1039/c8na00042e	journal	January 2019
Modification of the nanostructure of lignocellulose cell walls via a non-enzymatic lignocellulose deconstruction system in brown rot wood-decay fungi Goodell, Barry; Zhu, Yuan; Kim, Seong Biotechnology for Biofuels, Vol. 10, Issue 1 https://doi.org/10.1186/s13068-017-0865-2	journal	July 2017
Tension wood structure and morphology conducive for better enzymatic digestion Sawada, Daisuke; Kalluri, Udaya C.; O’Neill, Hugh Biotechnology for Biofuels, Vol. 11, Issue 1 https://doi.org/10.1186/s13068-018-1043-x	journal	February 2018
Progress and Opportunities in the Characterization of Cellulose – An Important Regulator of Cell Wall Growth and Mechanics Rongpipi, Sintu; Ye, Dan; Gomez, Enrique D. Frontiers in Plant Science, Vol. 9 https://doi.org/10.3389/fpls.2018.01894	journal	March 2019

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