Publication detail

Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications

ČERNEKOVÁ, N. HRICOVINI, M., VOSTREJŠ, P. KOVALČÍK, A.

Original Title

Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications

Type

journal article in Web of Science

Language

English

Original Abstract

The antioxidant and antimicrobial activities of lignin are often emphasized, however, not every type exhibits these properties. In this work, water-soluble fractions of alkali lignin (AL), poly-(caffeyl alcohol) lignin (PCFA), pyrolytic lignin (PL) and grape seed lignin (GSL) were prepared. The original and water-soluble lignin fractions were comprehensively characterized using high-resolution 2D NMR spectroscopy. Notably, water-soluble fractions of PCFA, PL and GSL lignins exbihited 3.6 to 3.9 higher antioxidant activities than the original lignins despite having a phenolic content approximately 12 % to 55 % lower. Additionally, these fractions demonstrated antimicrobial activities against Micrococcus luteus, Serratia marcescens and Escherichia coli. The potential of water-soluble lignin fractions as active modifiers for physically crosslinked hydrogels was also investigated. Specifically, PL/F lignin served as an antioxidant and antimicrobial agent for modifying carrageenan without disrupting its viscoelastic and swelling behaviour. Carrageenan hydrogels with 6 % PL/F lignin showed an antioxidant activity of 219.6 mg TE g-1 hydrogel and reduction rates of 43.9 % against M. luteus, 31.6 % againstS. marcescens and 20.6 % against E. coli.

Keywords

antioxidant properties, antibacterial properties, hydrogel, lignin, NMR

Authors

ČERNEKOVÁ, N.; HRICOVINI, M., VOSTREJŠ, P.; KOVALČÍK, A.

Released

10. 3. 2025

Publisher

Elsevier

ISBN

1879-0003

Periodical

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

Year of study

307

Number

1

State

Kingdom of the Netherlands

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0141813025025103

BibTex

@article{BUT197356,
  author="Nicole {Černeková} and Michal {Hricovini} and Pavel {Vostrejš} and Adriána {Kovalčík}",
  title="Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications",
  journal="INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES",
  year="2025",
  volume="307",
  number="1",
  pages="11",
  doi="10.1016/j.ijbiomac.2025.141959",
  issn="1879-0003",
  url="https://www.sciencedirect.com/science/article/pii/S0141813025025103"
}