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Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus
In a biorefinery framework, a laccase/mediator system treatment following autohydrolysis was carried out for eucalyptus wood prior to soda-anthraquinone pulping. The enzymatic and autohydrolysis conditions, with a view to maximizing the extraction of hemicelluloses while preserving the integrity of...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523827/ https://www.ncbi.nlm.nih.gov/pubmed/31013642 http://dx.doi.org/10.3390/polym11040731 |
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author | Loaiza, Javier M. Alfaro, Ascensión López, Francisco García, María T. García, Juan C. |
author_facet | Loaiza, Javier M. Alfaro, Ascensión López, Francisco García, María T. García, Juan C. |
author_sort | Loaiza, Javier M. |
collection | PubMed |
description | In a biorefinery framework, a laccase/mediator system treatment following autohydrolysis was carried out for eucalyptus wood prior to soda-anthraquinone pulping. The enzymatic and autohydrolysis conditions, with a view to maximizing the extraction of hemicelluloses while preserving the integrity of glucan, were optimized. Secondly, pulping of solid phase from Eucalyptus globulus wood autohydrolysis and the enzymatic process was carried out and compared with a conventional soda-anthraquinone (AQ) pulping process. The prehydrolysis and enzymatic delignification of the raw material prior to the delignification with soda- Anthraquinone (AQ) results in paper sheets with a lower kappa number and brightness and strength properties close to conventional soda-AQ paper and a liquid fraction rich in hemicellulose compounds that can be used in additional ways. The advantage of this biorefinery scheme is that it requires a lower concentration of chemical reagents, and lower operating times and temperature in the alkaline delignification stage, which represents an economic and environmental improvement over the conventional process. |
format | Online Article Text |
id | pubmed-6523827 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-65238272019-06-03 Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus Loaiza, Javier M. Alfaro, Ascensión López, Francisco García, María T. García, Juan C. Polymers (Basel) Article In a biorefinery framework, a laccase/mediator system treatment following autohydrolysis was carried out for eucalyptus wood prior to soda-anthraquinone pulping. The enzymatic and autohydrolysis conditions, with a view to maximizing the extraction of hemicelluloses while preserving the integrity of glucan, were optimized. Secondly, pulping of solid phase from Eucalyptus globulus wood autohydrolysis and the enzymatic process was carried out and compared with a conventional soda-anthraquinone (AQ) pulping process. The prehydrolysis and enzymatic delignification of the raw material prior to the delignification with soda- Anthraquinone (AQ) results in paper sheets with a lower kappa number and brightness and strength properties close to conventional soda-AQ paper and a liquid fraction rich in hemicellulose compounds that can be used in additional ways. The advantage of this biorefinery scheme is that it requires a lower concentration of chemical reagents, and lower operating times and temperature in the alkaline delignification stage, which represents an economic and environmental improvement over the conventional process. MDPI 2019-04-22 /pmc/articles/PMC6523827/ /pubmed/31013642 http://dx.doi.org/10.3390/polym11040731 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Loaiza, Javier M. Alfaro, Ascensión López, Francisco García, María T. García, Juan C. Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title | Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title_full | Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title_fullStr | Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title_full_unstemmed | Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title_short | Optimization of Laccase/Mediator System (LMS) Stage Applied in Fractionation of Eucalyptus globulus |
title_sort | optimization of laccase/mediator system (lms) stage applied in fractionation of eucalyptus globulus |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523827/ https://www.ncbi.nlm.nih.gov/pubmed/31013642 http://dx.doi.org/10.3390/polym11040731 |
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