Polymerization of lignosulfonates by the laccase-HBT (1-hydroxybenzotriazole) system improves dispersibility

Endry Nugroho Prasetyo, Tukayi Kudanga, Lars Østergaard, Jorge Rencoret, Ana Gutiérrez, José C. del Río, J. Ignacio Santos, Lidia Nieto, Jesús Jiménez-Barbero, Angel T. Martínez, Jiebing Li, Göran Gellerstedt, Stéphane Lepifre, Carla Silva, Su Yeon Kim, Artur Cavaco-Paulo, Bente Seljebakken Klausen, Bjart Frode Lutnaes, Gibson S. Nyanhongo*, Georg M. Guebitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

The ability of laccases from Trametes villosa (TvL), Myceliophthora thermophila (MtL), Trametes hirsuta (ThL) and Bacillus subtilis (BsL) to improve the dispersion properties of calcium lignosulfonates 398 in the presence of HBT as a mediator was investigated. Size exclusion chromatography showed an extensive increase in molecular weight of the samples incubated with TvL and ThL by 107% and 572% from 28400 Da after 17 h of incubation, respectively. Interestingly, FTIR spectroscopy, 13C NMR and Py-GC/MS analysis of the treated samples suggested no substantial changes in the aromatic signal of the lignosulfonates, a good indication of the ability of TvL/ThL-HBT systems to limit their effect on functional groups without degrading the lignin backbone. Further, the enzymatic treatments led to a general increase in the dispersion properties, indeed a welcome development for its application in polymer blends.

Original languageEnglish
Pages (from-to)5054-5062
Number of pages9
JournalBioresource Technology
Volume101
Issue number14
DOIs
Publication statusPublished - Jul 2010
Externally publishedYes

Keywords

  • Calcium lignosulfonates
  • Dispersion
  • Enzymatic modification
  • Laccase
  • Polymerization

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