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Natural acetylation impacts carbohydrate recovery during deconstruction of Populus trichocarpa wood Johnson, Amanda M.; Kim, Hoon; Ralph, John; Mansfield, Shawn D., 1969-

Abstract

Background: Significant variation in the inherent degree of acetylation naturally exists in the xylem cell walls of Populus trichocarpa. During pretreatment, endogenous acetate hydrolyzes to acetic acid that can subsequently catalyze the breakdown of poplar wood, increasing the efficiency of biomass pretreatment. Results Poplar genotypes varying in cell wall composition were pretreated in 0.3% H2SO4 in non-isothermal batch reactors. Acetic acid released from the wood was positively related to sugar release during pretreatment (R ≥ 0.9), and inversely proportional to the lignin content of the poplar wood (R = 0.6). Conclusion There is significant variation in wood chemistry among P. trichocarpa genotypes. This study elucidated patterns of cell wall deconstruction and clearly links carbohydrate solubilization to acetate release. Tailoring biomass feedstocks for acetate release could enhance pretreatment efficiencies.

Item Metadata

Title
Natural acetylation impacts carbohydrate recovery during deconstruction of Populus trichocarpa wood
Creator
Johnson, Amanda M.; Kim, Hoon; Ralph, John; Mansfield, Shawn D., 1969-
Publisher
BioMed Central
Date Issued
2017-02-23
Description
Background: Significant variation in the inherent degree of acetylation naturally exists in the xylem cell walls of Populus trichocarpa. During pretreatment, endogenous acetate hydrolyzes to acetic acid that can subsequently catalyze the breakdown of poplar wood, increasing the efficiency of biomass pretreatment. Results Poplar genotypes varying in cell wall composition were pretreated in 0.3% H2SO4 in non-isothermal batch reactors. Acetic acid released from the wood was positively related to sugar release during pretreatment (R ≥ 0.9), and inversely proportional to the lignin content of the poplar wood (R = 0.6). Conclusion There is significant variation in wood chemistry among P. trichocarpa genotypes. This study elucidated patterns of cell wall deconstruction and clearly links carbohydrate solubilization to acetate release. Tailoring biomass feedstocks for acetate release could enhance pretreatment efficiencies.
Subject
Acetate; Acetyl group; Xylan; Pretreatment; Biorefinery; Advanced biofuels
Genre
Article
Type
Text
Language
eng
Date Available
2017-02-24
Provider
Vancouver : University of British Columbia Library
Rights
Attribution 4.0 International (CC BY 4.0)
DOI
10.14288/1.0343039
URI
http://hdl.handle.net/2429/60687
Affiliation
Forestry, Faculty of; Non UBC; Wood Science, Department of
Citation
Biotechnology for Biofuels. 2017 Feb 23;10(1):48
Publisher DOI
10.1186/s13068-017-0734-z
Peer Review Status
Reviewed
Scholarly Level
Faculty
Copyright Holder
The Author(s)
Rights URI
http://creativecommons.org/licenses/by/4.0/
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Attribution 4.0 International (CC BY 4.0)