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
Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
Show others and affiliations
2017 (English)In: INDUSTRIAL CROPS AND PRODUCTS, ISSN 0926-6690, Vol. 95, p. 512-520Article in journal (Refereed) Published
Abstract [en]

Alder soda lignin, a by-product of the chemical processing of black alder wood, was fractionated using ionic liquids (ILs) based on the 1-buthyl-3-methylimidazolium [Bmim] cation and the following anions: chloride ([Bmim]Cl), dimethylphosphate ([Bmim]Me2PO4), acetate ([Brhim]OAc) and tosylate ([Bmim]OTs). The aim was to obtain lignin fractions of improved purity for further application as antioxidants. The purity and properties of the IL lignin fractions were compared with those of other lignin fractions obtained using sequential extraction with organic solvents. The original lignin and the lignin fractions were characterized by analytical pyrolysis (Py-GC/MS/FID), size-permeation chromatography (GPC), electron paramagnetic resonance (EPR) spectroscopy and wet chemistry methods. The lignin treatment with [Bmim]DMP, [Bmim]OAc and [Bmim]OTs produced fractions with a lignin content of 98-99%. These fractions along with the n-propanol and methanol fractions obtained using sequential organic solvent extraction were enriched with certain structural features that had a positive impact on lignin antioxidant activity, according to the results from DPPH center dot and ORAC assays.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 95, p. 512-520
Keywords [en]
Ionic liquids, Lignin, Analytical pyrolysis (Py-GC/MS/FID), Antioxidant activity, Electron paramagnetic resonance (EPR), Gel-permeation chromatography (GPC), Purification
National Category
Environmental Sciences related to Agriculture and Land-use
Identifiers
URN: urn:nbn:se:kth:diva-200199DOI: 10.1016/j.indcrop.2016.11.004ISI: 000390621600058Scopus ID: 2-s2.0-85003791546OAI: oai:DiVA.org:kth-200199DiVA, id: diva2:1071013
Note

QC 20170202

Available from: 2017-02-02 Created: 2017-01-23 Last updated: 2018-01-13Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Sevastyanova, Olena

Search in DiVA

By author/editor
Sevastyanova, Olena
By organisation
Fibre and Polymer TechnologyWallenberg Wood Science Center
Environmental Sciences related to Agriculture and Land-use

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 620 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