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Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments

The production of cellulosic ethanol from biomass is considered a promising alternative to reliance on diminishing supplies of fossil fuels, providing a sustainable option for fuels production in an environmentally compatible manner. The conversion of lignocellulosic biomass to biofuels through a bi...

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Autores principales: Pu, Yunqiao, Hu, Fan, Huang, Fang, Davison, Brian H, Ragauskas, Arthur J
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575271/
https://www.ncbi.nlm.nih.gov/pubmed/23356640
http://dx.doi.org/10.1186/1754-6834-6-15
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author Pu, Yunqiao
Hu, Fan
Huang, Fang
Davison, Brian H
Ragauskas, Arthur J
author_facet Pu, Yunqiao
Hu, Fan
Huang, Fang
Davison, Brian H
Ragauskas, Arthur J
author_sort Pu, Yunqiao
collection PubMed
description The production of cellulosic ethanol from biomass is considered a promising alternative to reliance on diminishing supplies of fossil fuels, providing a sustainable option for fuels production in an environmentally compatible manner. The conversion of lignocellulosic biomass to biofuels through a biological route usually suffers from the intrinsic recalcitrance of biomass owing to the complicated structure of plant cell walls. Currently, a pretreatment step that can effectively reduce biomass recalcitrance is generally required to make the polysaccharide fractions locked in the intricacy of plant cell walls to become more accessible and amenable to enzymatic hydrolysis. Dilute acid and hydrothermal pretreatments are attractive and among the most promising pretreatment technologies that enhance sugar release performance. This review highlights our recent understanding on molecular structure basis for recalcitrance, with emphasis on structural transformation of major biomass biopolymers (i.e., cellulose, hemicellulose, and lignin) related to the reduction of recalcitrance during dilute acid and hydrothermal pretreatments. The effects of these two pretreatments on biomass porosity as well as its contribution on reduced recalcitrance are also discussed.
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spelling pubmed-35752712013-02-19 Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments Pu, Yunqiao Hu, Fan Huang, Fang Davison, Brian H Ragauskas, Arthur J Biotechnol Biofuels Review The production of cellulosic ethanol from biomass is considered a promising alternative to reliance on diminishing supplies of fossil fuels, providing a sustainable option for fuels production in an environmentally compatible manner. The conversion of lignocellulosic biomass to biofuels through a biological route usually suffers from the intrinsic recalcitrance of biomass owing to the complicated structure of plant cell walls. Currently, a pretreatment step that can effectively reduce biomass recalcitrance is generally required to make the polysaccharide fractions locked in the intricacy of plant cell walls to become more accessible and amenable to enzymatic hydrolysis. Dilute acid and hydrothermal pretreatments are attractive and among the most promising pretreatment technologies that enhance sugar release performance. This review highlights our recent understanding on molecular structure basis for recalcitrance, with emphasis on structural transformation of major biomass biopolymers (i.e., cellulose, hemicellulose, and lignin) related to the reduction of recalcitrance during dilute acid and hydrothermal pretreatments. The effects of these two pretreatments on biomass porosity as well as its contribution on reduced recalcitrance are also discussed. BioMed Central 2013-01-28 /pmc/articles/PMC3575271/ /pubmed/23356640 http://dx.doi.org/10.1186/1754-6834-6-15 Text en Copyright ©2013 Pu et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Review
Pu, Yunqiao
Hu, Fan
Huang, Fang
Davison, Brian H
Ragauskas, Arthur J
Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title_full Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title_fullStr Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title_full_unstemmed Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title_short Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
title_sort assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3575271/
https://www.ncbi.nlm.nih.gov/pubmed/23356640
http://dx.doi.org/10.1186/1754-6834-6-15
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