Cargando…

Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark

[Image: see text] The interest in the bark and the attempt to add value to its utilization have increased over the last decade. By applying an integrated bark biorefinery approach, it is possible to investigate the recovery of compounds that can be used to develop green and sustainable alternatives...

Descripción completa

Detalles Bibliográficos
Autores principales: Rietzler, Barbara, Karlsson, Maria, Kwan, Isabella, Lawoko, Martin, Ek, Monica
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9364314/
https://www.ncbi.nlm.nih.gov/pubmed/35815507
http://dx.doi.org/10.1021/acs.biomac.2c00457
_version_ 1784765124331962368
author Rietzler, Barbara
Karlsson, Maria
Kwan, Isabella
Lawoko, Martin
Ek, Monica
author_facet Rietzler, Barbara
Karlsson, Maria
Kwan, Isabella
Lawoko, Martin
Ek, Monica
author_sort Rietzler, Barbara
collection PubMed
description [Image: see text] The interest in the bark and the attempt to add value to its utilization have increased over the last decade. By applying an integrated bark biorefinery approach, it is possible to investigate the recovery of compounds that can be used to develop green and sustainable alternatives to fossil-based materials. In this work, the focus is on extracting Norway spruce (Picea abies) bark lignin via organosolv extraction. Following the removal of the extractives and the subcritical water extraction to remove the polysaccharides, a novel cyclic organosolv extraction procedure was applied, which enabled the recovery of lignin with high quality and preserved structure. Main indicators for low degradation and preservation of the lignin structure were a high β-O-4′ content and low amounts of condensed structures. Furthermore, high purity and low polydispersity of the lignin were observed. Thus, the obtained lignin exhibits high potential for use in the direct development of polymer precursors and other bio-based materials. During the extraction sequence, around 70% of the bark was extracted. Besides the lignin, the extractives as well as pectic polysaccharides and hemicelluloses were recovered with only minor degradation, which could potentially be used for the production of biofuel or other high-value products such as emulsifiers or adhesives.
format Online
Article
Text
id pubmed-9364314
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-93643142022-08-11 Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark Rietzler, Barbara Karlsson, Maria Kwan, Isabella Lawoko, Martin Ek, Monica Biomacromolecules [Image: see text] The interest in the bark and the attempt to add value to its utilization have increased over the last decade. By applying an integrated bark biorefinery approach, it is possible to investigate the recovery of compounds that can be used to develop green and sustainable alternatives to fossil-based materials. In this work, the focus is on extracting Norway spruce (Picea abies) bark lignin via organosolv extraction. Following the removal of the extractives and the subcritical water extraction to remove the polysaccharides, a novel cyclic organosolv extraction procedure was applied, which enabled the recovery of lignin with high quality and preserved structure. Main indicators for low degradation and preservation of the lignin structure were a high β-O-4′ content and low amounts of condensed structures. Furthermore, high purity and low polydispersity of the lignin were observed. Thus, the obtained lignin exhibits high potential for use in the direct development of polymer precursors and other bio-based materials. During the extraction sequence, around 70% of the bark was extracted. Besides the lignin, the extractives as well as pectic polysaccharides and hemicelluloses were recovered with only minor degradation, which could potentially be used for the production of biofuel or other high-value products such as emulsifiers or adhesives. American Chemical Society 2022-07-11 2022-08-08 /pmc/articles/PMC9364314/ /pubmed/35815507 http://dx.doi.org/10.1021/acs.biomac.2c00457 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Rietzler, Barbara
Karlsson, Maria
Kwan, Isabella
Lawoko, Martin
Ek, Monica
Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title_full Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title_fullStr Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title_full_unstemmed Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title_short Fundamental Insights on the Physical and Chemical Properties of Organosolv Lignin from Norway Spruce Bark
title_sort fundamental insights on the physical and chemical properties of organosolv lignin from norway spruce bark
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9364314/
https://www.ncbi.nlm.nih.gov/pubmed/35815507
http://dx.doi.org/10.1021/acs.biomac.2c00457
work_keys_str_mv AT rietzlerbarbara fundamentalinsightsonthephysicalandchemicalpropertiesoforganosolvligninfromnorwaysprucebark
AT karlssonmaria fundamentalinsightsonthephysicalandchemicalpropertiesoforganosolvligninfromnorwaysprucebark
AT kwanisabella fundamentalinsightsonthephysicalandchemicalpropertiesoforganosolvligninfromnorwaysprucebark
AT lawokomartin fundamentalinsightsonthephysicalandchemicalpropertiesoforganosolvligninfromnorwaysprucebark
AT ekmonica fundamentalinsightsonthephysicalandchemicalpropertiesoforganosolvligninfromnorwaysprucebark