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Potential of genetically engineered hybrid poplar for pyrolytic production of bio-based phenolic compounds
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics. bGhent University, Department of Plant Systems Biology, Ghent, Belgium.
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2016 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 207, 229-236 p.Article in journal (Refereed) PublishedText
Abstract [en]

Wild-type and two genetically engineered hybrid poplar lines were pyrolyzed in a micro-pyrolysis (Py-GC/MS) and a bench scale setup for fast and intermediate pyrolysis studies. Principal component analysis showed that the pyrolysis vapors obtained by micro-pyrolysis from wood of caffeic acid O-methyltransferase (COMT) and caffeoyl-CoA O-methyltransferase (CCoAOMT) down-regulated poplar trees differed significantly from the pyrolysis vapors obtained from non-transgenic control trees. Both fast micro-pyrolysis and intermediate pyrolysis of transgenic hybrid poplars showed that downregulation of COMT can enhance the relative yield of guaiacyl lignin-derived products, while the relative yield of syringyl lignin-derived products was up to a factor 3 lower. This study indicates that lignin engineering via genetic modifications of genes involved in the phenylpropanoid and monolignol biosynthetic pathways can help to steer the pyrolytic production of guaiacyl and syringyl lignin-derived phenolic compounds such as guaiacol, 4-methylguaiacol, 4-ethylguaiacol, 4-vinylguaiacol, syringol, 4-vinylsyringol, and syringaldehyde present in the bio-oil. (C) 2016 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2016. Vol. 207, 229-236 p.
Keyword [en]
Pyrolysis, Transgenic plants, Bio-oil, Phenolic compounds, Principal component analysis
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-118769DOI: 10.1016/j.biortech.2016.02.022ISI: 000371262600030OAI: oai:DiVA.org:umu-118769DiVA: diva2:918533
Available from: 2016-04-11 Created: 2016-04-04 Last updated: 2016-04-11Bibliographically approved

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Boren, Eleonora
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