Voltammetric monitoring of laccase-catalysed reactions of different lignins through oxidative coupling with glucosamine

Fitigau Firuta Ionita and Vaszilcsin Cristian George and Urmosi Zoltán: Voltammetric monitoring of laccase-catalysed reactions of different lignins through oxidative coupling with glucosamine.

[thumbnail of proceedings_of_isaep_2020_129-132.pdf]
Preview
Cikk, tanulmány, mű
proceedings_of_isaep_2020_129-132.pdf

Download (346kB) | Preview

Abstract

The ability of laccase to facilitate grafting hydrophilic compounds, namely glucosamine to lignin in acetone/water mixtures aiming to obtain grafted novel lignin derivatives with new functionalities was assayed by cyclic voltammetry. The oxidation properties registered for the oxidative reactions of syringaldazine lignin model compound with glucosamine evidenced that the reaction scan is direct proportional with the redox potential differences between substrate and laccase. A comparative electrochemical activity of lignins on the GCE in absence and presence of the laccase and glucosamine is presented. From the measurements of the coupling reactions currents it was concluded that the addition of glucosamine can lead to a partial loss of the redox activity of lignin phenolic groups and the co-substrate interaction with the lignin surface groups.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2020
Volume: 26
ISBN: 978-963-306-771-0
Page Range: pp. 129-132
Language: English
Event Title: International Symposium on Analytical and Environmental Problems (26.) (2020) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/73792/
Uncontrolled Keywords: Kémia
Additional Information: Bibliogr.: 132. p. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2021. Nov. 17. 09:58
Last Modified: 2022. Aug. 08. 15:39
URI: http://acta.bibl.u-szeged.hu/id/eprint/73977

Actions (login required)

View Item View Item