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Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content

Lancefield, Christopher S.; Rashid, Goran M. M.; Bouxin, Florent; Wasak, Agata; Tu, Wei-Chien; Hallett, Jason; Zein, Sharif; Rodríguez, Jaime; Jackson, S. David; Westwood, Nicholas J.; Bugg, Timothy D. H.

Authors

Christopher S. Lancefield

Goran M. M. Rashid

Florent Bouxin

Agata Wasak

Wei-Chien Tu

Jason Hallett

Dr Sharif Zein S.H.Zein@hull.ac.uk
Director of Postgraduate Research, Chemical Engineering Department

Jaime Rodríguez

S. David Jackson

Nicholas J. Westwood

Timothy D. H. Bugg



Abstract

A set of seven 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 characterized 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 valorization 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 -1 ) 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 valorization 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.

Journal Article Type Article
Publication Date Dec 5, 2016
Journal ACS sustainable chemistry & engineering
Print ISSN 2168-0485
Electronic ISSN 2168-0485
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 4
Issue 12
Pages 6921-6930
Institution Citation Lancefield, C. S., Rashid, G. M. M., Bouxin, F., Wasak, A., Tu, W., Hallett, J., …Bugg, T. D. H. (2016). Investigation of the chemocatalytic and biocatalytic valorization of a range of different lignin preparations: The importance of β-O-4 content. ACS Sustainable Chemistry and Engineering, 4(12), 6921-6930. https://doi.org/10.1021/acssuschemeng.6b01855
DOI https://doi.org/10.1021/acssuschemeng.6b01855
Keywords β-O-4
Publisher URL 10.1021/acssuschemeng.6b01855
Additional Information This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Sustainable Chemistry and Engineering, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi...1/acssuschemeng.6b01855

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