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: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

8 Citations (Scopus)

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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
Title of host publication	International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012)
Subtitle of host publication	Conference Proceedings
Volume	38
Edition	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/

Publication series

Name	IOP Conference Series: Materials Science and Engineering
Publisher	IOP Publishing Ltd.
ISSN (Print)	1757-8981

Conference

Conference	International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012)
Abbreviated title	FM&NT-2012
Country/Territory	Latvia
City	Riga
Period	17/04/12 → 20/04/12
Other	International Conference on Functional Materials and Nanotechnologies
Internet address	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

Access to Document

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

Role of paramagnetic polyconjugated clustersFinal published version, 686 KB

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Dizhbite, T., Ponomarenko, J., Andersone, A., Dobele, G., Lauberts, M., Krasilnikova, J., Mironova-Ulmane, N., & Telysheva, G. (2012). Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro). In International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012): Conference Proceedings (1 ed., Vol. 38). Article 012033 (IOP Conference Series: Materials Science and Engineering). https://doi.org/10.1088/1757-899X/38/1/012033

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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",

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doi = "10.1088/1757-899X/38/1/012033",

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volume = "38",

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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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Dizhbite, T, Ponomarenko, J, Andersone, A, Dobele, G, Lauberts, M, Krasilnikova, J, Mironova-Ulmane, N & Telysheva, G 2012, Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro). in International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012): Conference Proceedings. 1 edn, vol. 38, 012033, IOP Conference Series: Materials Science and Engineering, International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012), Riga, Latvia, 17/04/12. https://doi.org/10.1088/1757-899X/38/1/012033

Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro). / Dizhbite, T.; Ponomarenko, J.; Andersone, A. et al.
International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012): Conference Proceedings. Vol. 38 1. ed. 2012. 012033 (IOP Conference Series: Materials Science and Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

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

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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.

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

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

M3 - Conference contribution

AN - SCOPUS:84874084881

VL - 38

T3 - IOP Conference Series: Materials Science and Engineering

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

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

Y2 - 17 April 2012 through 20 April 2012

ER -

Dizhbite T, Ponomarenko J, Andersone A, Dobele G, Lauberts M, Krasilnikova J et al. Role of paramagnetic polyconjugated clusters in lignin antioxidant activity (in vitro). In International Conference "Functional Materials and Nanotechnologies" (FM&NT-2012): Conference Proceedings. 1 ed. Vol. 38. 2012. 012033. (IOP Conference Series: Materials Science and Engineering). doi: 10.1088/1757-899X/38/1/012033

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

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