Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

Maris Lauberts; Olena Sevastyanova; Jevgenija Ponomarenko; Tatjana Dizhbite; Galina Dobele; Alexandr Volperts; Līga Lauberte; Galina Telysheva

doi:10.1016/j.indcrop.2016.11.004

Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

Maris Lauberts, Olena Sevastyanova (Corresponding Author), Jevgenija Ponomarenko, Tatjana Dizhbite, Galina Dobele, Alexandr Volperts, Līga Lauberte, Galina Telysheva

Research output: Contribution to journal › Article › peer-review

54 Citations (Scopus)

Abstract

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 ([Bmim]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[rad] and ORAC assays.

Original language	English
Pages (from-to)	512-520
Number of pages	9
Journal	Industrial Crops and Products
Volume	95
DOIs	https://doi.org/10.1016/j.indcrop.2016.11.004
Publication status	Published - 1 Jan 2017
Externally published	Yes

Keywords*

Analytical pyrolysis (Py-GC/MS/FID)
Antioxidant activity
Electron paramagnetic resonance (EPR)
Gel-permeation chromatography (GPC)
Ionic liquids
Lignin
Purification

Field of Science*

1.4 Chemical sciences
2.4 Chemical engineering

Publication Type*

1.1. Scientific article indexed in Web of Science and/or Scopus database

Access to Document

10.1016/j.indcrop.2016.11.004

Cite this

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title = "Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity",

abstract = "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 ([Bmim]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[rad] and ORAC assays.",

keywords = "Analytical pyrolysis (Py-GC/MS/FID), Antioxidant activity, Electron paramagnetic resonance (EPR), Gel-permeation chromatography (GPC), Ionic liquids, Lignin, Purification",

author = "Maris Lauberts and Olena Sevastyanova and Jevgenija Ponomarenko and Tatjana Dizhbite and Galina Dobele and Alexandr Volperts and Līga Lauberte and Galina Telysheva",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = jan,

day = "1",

doi = "10.1016/j.indcrop.2016.11.004",

language = "English",

volume = "95",

pages = "512--520",

journal = "Industrial Crops and Products",

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TY - JOUR

T1 - Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

AU - Lauberts, Maris

AU - Sevastyanova, Olena

AU - Ponomarenko, Jevgenija

AU - Dizhbite, Tatjana

AU - Dobele, Galina

AU - Volperts, Alexandr

AU - Lauberte, Līga

AU - Telysheva, Galina

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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 ([Bmim]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[rad] and ORAC assays.

AB - 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 ([Bmim]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[rad] and ORAC assays.

KW - Analytical pyrolysis (Py-GC/MS/FID)

KW - Antioxidant activity

KW - Electron paramagnetic resonance (EPR)

KW - Gel-permeation chromatography (GPC)

KW - Ionic liquids

KW - Lignin

KW - Purification

UR - https://www.scopus.com/pages/publications/85003791546

U2 - 10.1016/j.indcrop.2016.11.004

DO - 10.1016/j.indcrop.2016.11.004

M3 - Article

AN - SCOPUS:85003791546

SN - 0926-6690

VL - 95

SP - 512

EP - 520

JO - Industrial Crops and Products

JF - Industrial Crops and Products

ER -

Fractionation of technical lignin with ionic liquids as a method for improving purity and antioxidant activity

Abstract

Keywords*

Field of Science*

Publication Type*

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