Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro)

T. Dizhbite; J. Ponomarenko; A. Andersone; G. Dobele; M. Lauberts; J. Krasilnikova; N. Mironova-Ulmane; G. Telysheva

doi:10.1088/1757-899X/38/1/012033

Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro)

T. Dizhbite, J. Ponomarenko, A. Andersone, G. Dobele, M. Lauberts, J. Krasilnikova, N. Mironova-Ulmane, G. Telysheva

Rīga Stradiņš University

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS ^•+ and O₂^•- antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed by in vitro experiment with human blood.

Original language	English
Article number	012033
Journal	IOP Conference Series: Materials Science and Engineering
Volume	38
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/38/1/012033
Publication status	Published - 2012
Event	International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012) - Institute of Solid State Physics, University of Latvia, Riga, Latvia Duration: 17 Apr 2012 → 20 Apr 2012 https://www.cfi.lu.lv/lv/notikumi/konferences/cfiorganizetasstarptautiskaskonferencesunpasakumi/gadskarteja-functional-materials-and-nanotechnologies-konference/fmnt-2012/

Field of Science*

2.5 Materials engineering

Publication Type*

3.1. Articles or chapters in proceedings/scientific books indexed in Web of Science and/or Scopus database

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10.1088/1757-899X/38/1/012033

Role of paramagnetic polyconjugated clustersFinal published version, 937 KB

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title = "Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro)",

abstract = "Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS •+ and O2•- antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed by in vitro experiment with human blood.",

author = "T. Dizhbite and J. Ponomarenko and A. Andersone and G. Dobele and M. Lauberts and J. Krasilnikova and N. Mironova-Ulmane and G. Telysheva",

year = "2012",

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url = "https://www.cfi.lu.lv/lv/notikumi/konferences/cfiorganizetasstarptautiskaskonferencesunpasakumi/gadskarteja-functional-materials-and-nanotechnologies-konference/fmnt-2012/",

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TY - JOUR

T1 - Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro)

AU - Dizhbite, T.

AU - Ponomarenko, J.

AU - Andersone, A.

AU - Dobele, G.

AU - Lauberts, M.

AU - Krasilnikova, J.

AU - Mironova-Ulmane, N.

AU - Telysheva, G.

PY - 2012

Y1 - 2012

N2 - Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS •+ and O2•- antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed by in vitro experiment with human blood.

AB - Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS •+ and O2•- antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed by in vitro experiment with human blood.

UR - http://www.scopus.com/inward/record.url?scp=84874084881&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/38/1/012033

DO - 10.1088/1757-899X/38/1/012033

M3 - Conference article

AN - SCOPUS:84874084881

SN - 1757-8981

VL - 38

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

IS - 1

M1 - 012033

T2 - International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012)

Y2 - 17 April 2012 through 20 April 2012

ER -

Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro)

Abstract

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