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An investigation of the chemocatalytic and biocatalytic valorisation of a range of different lignin preparations : the importance of β-O-4 content
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Lancefield, Christopher S., Rashid, Goran M. M., Bouxin, Florent, Wasak, Agata, Tu, Wei-Chien, Hallett, Jason P., Zein, Sharif, Rodriguez, Jaime, Jackson, S. David, Westwood, Nicholas J. and Bugg, Timothy D. H. (2016) An investigation of the chemocatalytic and biocatalytic valorisation of a range of different lignin preparations : the importance of β-O-4 content. ACS Sustainable Chemistry & Engineering . doi:10.1021/acssuschemeng.6b01855 ISSN 2168-0485.
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Official URL: http://dx.doi.org/10.1021/acssuschemeng.6b01855
Abstract
A set of 7 different lignin preparations was generated from a range of organosolv (acidic, alkaline, ammonia-treated and dioxane-based), ionic liquid, autohydrolysis and Kraft pretreatments of lignocelluloses. Each lignin was characterised by 2D HSQC NMR spectroscopy, showing significant variability in the β-O-4 content of the different lignin samples. Each lignin was then valorised using three biocatalytic methods (microbial biotransformation with Rhodococcus jostii RHA045, treatment with Pseudomonas fluorescens Dyp1B or Sphingobacterium sp. T2 manganese superoxide dismutase) and two chemocatalytic methods (catalytic hydrogenation using Pt/alumina catalyst, DDQ benzylic oxidation/Zn reduction). Highest product yields for DDQ/Zn valorisation were observed from poplar ammonia percolation-organosolv lignin, which had the highest β-O-4 content of the investigated lignins and also gave the highest yield of syringaldehyde (243 mg/L) when using R. jostii RHA045, and the most enzymatic products using P. fluorescens Dyp1B. The highest product yield from the Pt/alumina hydrogenation was observed using oak dioxasolv lignin, which also had a high β-O-4 content. In general, highest product yields for both chemocatalytic and biocatalytic valorisation methods were obtained from preparations that showed highest β-O-4 content, while variable yields were obtained with preparations containing intermediate β-O-4 content, and little or no product was obtained with preparations containing low β-O-4 content.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TP Chemical technology | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||
Library of Congress Subject Headings (LCSH): | Biomass, Lignin, superoxide dismutase | ||||||
Journal or Publication Title: | ACS Sustainable Chemistry & Engineering | ||||||
Publisher: | American Chemical Society | ||||||
ISSN: | 2168-0485 | ||||||
Official Date: | 3 October 2016 | ||||||
Dates: |
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DOI: | 10.1021/acssuschemeng.6b01855 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
Date of first compliant deposit: | 6 October 2016 | ||||||
Date of first compliant Open Access: | 3 October 2017 | ||||||
Funder: | Biotechnology and Biological Sciences Research Council (Great Britain) (BBSRC) |
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