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Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance

Lignin, a complex aromatic polymer in terrestrial plants, contributes significantly to biomass recalcitrance to microbial and/or enzymatic deconstruction. To reduce biomass recalcitrance, substantial endeavors have been exerted on pretreatment and lignin engineering in the past few decades. Lignin r...

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Detalles Bibliográficos
Autores principales: Li, Mi, Pu, Yunqiao, Ragauskas, Arthur J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5114238/
https://www.ncbi.nlm.nih.gov/pubmed/27917379
http://dx.doi.org/10.3389/fchem.2016.00045
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author Li, Mi
Pu, Yunqiao
Ragauskas, Arthur J.
author_facet Li, Mi
Pu, Yunqiao
Ragauskas, Arthur J.
author_sort Li, Mi
collection PubMed
description Lignin, a complex aromatic polymer in terrestrial plants, contributes significantly to biomass recalcitrance to microbial and/or enzymatic deconstruction. To reduce biomass recalcitrance, substantial endeavors have been exerted on pretreatment and lignin engineering in the past few decades. Lignin removal and/or alteration of lignin structure have been shown to result in reduced biomass recalcitrance with improved cell wall digestibility. While high lignin content is usually a barrier to a cost-efficient application of bioresources to biofuels, the direct correlation of lignin structure and its concomitant properties with biomass remains unclear due to the complexity of cell wall and lignin structure. Advancement in application of biorefinery to production of biofuels, chemicals, and bio-derived materials necessitates a fundamental understanding of the relationship of lignin structure and biomass recalcitrance. In this mini-review, we focus on recent investigations on the influence of lignin chemical properties on bioprocessability—pretreatment and enzymatic hydrolysis of biomass. Specifically, lignin-enzyme interactions and the effects of lignin compositional units, hydroxycinnamates, and lignin functional groups on biomass recalcitrance have been highlighted, which will be useful not only in addressing biomass recalcitrance but also in deploying renewable lignocelluloses efficiently.
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spelling pubmed-51142382016-12-02 Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance Li, Mi Pu, Yunqiao Ragauskas, Arthur J. Front Chem Chemistry Lignin, a complex aromatic polymer in terrestrial plants, contributes significantly to biomass recalcitrance to microbial and/or enzymatic deconstruction. To reduce biomass recalcitrance, substantial endeavors have been exerted on pretreatment and lignin engineering in the past few decades. Lignin removal and/or alteration of lignin structure have been shown to result in reduced biomass recalcitrance with improved cell wall digestibility. While high lignin content is usually a barrier to a cost-efficient application of bioresources to biofuels, the direct correlation of lignin structure and its concomitant properties with biomass remains unclear due to the complexity of cell wall and lignin structure. Advancement in application of biorefinery to production of biofuels, chemicals, and bio-derived materials necessitates a fundamental understanding of the relationship of lignin structure and biomass recalcitrance. In this mini-review, we focus on recent investigations on the influence of lignin chemical properties on bioprocessability—pretreatment and enzymatic hydrolysis of biomass. Specifically, lignin-enzyme interactions and the effects of lignin compositional units, hydroxycinnamates, and lignin functional groups on biomass recalcitrance have been highlighted, which will be useful not only in addressing biomass recalcitrance but also in deploying renewable lignocelluloses efficiently. Frontiers Media S.A. 2016-11-18 /pmc/articles/PMC5114238/ /pubmed/27917379 http://dx.doi.org/10.3389/fchem.2016.00045 Text en Copyright © 2016 Li, Pu and Ragauskas. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Li, Mi
Pu, Yunqiao
Ragauskas, Arthur J.
Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title_full Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title_fullStr Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title_full_unstemmed Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title_short Current Understanding of the Correlation of Lignin Structure with Biomass Recalcitrance
title_sort current understanding of the correlation of lignin structure with biomass recalcitrance
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5114238/
https://www.ncbi.nlm.nih.gov/pubmed/27917379
http://dx.doi.org/10.3389/fchem.2016.00045
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