Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Chemoenzymatic Fractionation and Characterization of Pretreated Birch Outer Bark
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering. Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, University of Rome Tor Vergata.
Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, University of Rome Tor Vergata.
Department of Chemical Sciences and Technologies, Via della Ricerca Scientifica, University of Rome Tor Vergata.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0001-7500-2367
Show others and affiliations
Number of Authors: 52016 (English)In: ACS Sustainable Chemistry and Engineering, ISSN 2168-0485, Vol. 4, no 10, p. 5289-5302Article in journal (Refereed) Published
Abstract [en]

In this study, the application of different chemical and enzymatic treatment methods for the fractionation of the birch outer bark components was evaluated. More specifically, untreated and steam exploded, hydrothermally and organosolv treated bark samples were incubated with enzyme mixtures that consisted of cellulases, hemicellulases and esterases, and the effect of enzymes was analyzed with 31P NMR and {13C-1H} HSQC. The biocatalysts performed the cleavage of ester bonds resulting in reduction of methoxy and aliphatic groups in the remaining solid fraction, whereas the aromatic fraction remained intact. Moreover, the suberin and lignin fraction were isolated chemically and their properties were characterized by gas chromatography (GC-MS), 31P NMR, {13C-1H} HSQC and gel permeation chromatography (GPC). It was demonstrated that the lignin fraction was enriched in guaiacyl phenolics but still contained some associated aliphatic acids and carbohydrates, whereas the suberin fraction presented a polymodal pattern of structures with different molecular weight distributions. This work will help in getting a deeper fundamental knowledge of the bark structure, the intermolecular connection between lignin and suberin fractions, as well as the potential use of enzymes in order to degrade the recalcitrant bark structure toward its valorization.

Place, publisher, year, edition, pages
2016. Vol. 4, no 10, p. 5289-5302
National Category
Bioprocess Technology
Research subject
Biochemical Process Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-60108DOI: 10.1021/acssuschemeng.6b01204ISI: 000384791500020Scopus ID: 2-s2.0-84989840578OAI: oai:DiVA.org:ltu-60108DiVA, id: diva2:1044214
Note

Validerad; 2016; Nivå 2; 2016-11-02 (andbra)

Available from: 2016-11-02 Created: 2016-11-02 Last updated: 2018-07-10Bibliographically approved

Open Access in DiVA

fulltext(3357 kB)10 downloads
File information
File name FULLTEXT01.pdfFile size 3357 kBChecksum SHA-512
a2a545eebd97617852a38ad22c414ed6bf6bf67c3cc83821eb133afc38a2389f68247fff913c4aeb935697da5202922213b45acee49384ec56696d1fc9466554
Type fulltextMimetype application/pdf

Other links

Publisher's full textScopus

Authority records BETA

Rova, UlrikaChristakopoulos, Paul

Search in DiVA

By author/editor
Karnaouri, Anthi CRova, UlrikaChristakopoulos, Paul
By organisation
Chemical Engineering
Bioprocess Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 10 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 239 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf