Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F26%3A0197356" target="_blank" >RIV/00216305:26310/26:0197356 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0141813025025103" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0141813025025103</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijbiomac.2025.141959" target="_blank" >10.1016/j.ijbiomac.2025.141959</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Innovative antimicrobial lignins: Extraction and characterization for advanced hydrogel applications

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Biological Macromolecules

ISSN

0141-8130

e-ISSN

1879-0003

Svazek periodika

307

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001445108400001

EID výsledku v databázi Scopus

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