The in vitro 14C-labelled kraft pulp assay as used for evaluation of laccases and mediators intended for pulp bleaching

Paul Ander, Karin Grabner, Gottfried Kandioller, Ewald Srebotnik, Kristiina Poppius-Levlin, Sylvia Semar, Heidrun Anke, Marja-Leena Niku-Paavola, Liisa Viikari, Kurt Messner

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

Abstract

In the presence of K-ferricyanide as oxidant at pH 10, 14C-ring-labelled synthetic lignin (DHP) was covalently coupled to unbleached kraft pulp. This chemically labelled kraft pulp (CLKP) was used in a small scale (30 mg pulp in 1.5 ml buffer) for testing ligninolytic enzymes and mediators for possible use in pulp bleaching. The results from this assay correlated well with laccase/mediator kraft pulp delignification plus TCF-bleaching. The order of release of label from CLKP was: Laccase>lignin peroxidase>Bj. adusta MnP>Phanerochaete MnP. These results are discussed, as well as the possible relationship to oxidation of 20 mM HBT (1-hydroxybenzotriazole) by the above enzymes.
Original languageEnglish
Title of host publication7th International Conference on Biotechnology in the Pulp and Paper Industry
Subtitle of host publicationOral presentations
Place of PublicationMontreal
PublisherCanadian Pulp and Paper Association (CPPA)
PagesA111-A115
VolumeA
ISBN (Print)978-1-896742-34-2
Publication statusPublished - 1998
MoE publication typeB3 Non-refereed article in conference proceedings
Event7th International Conference on Biotechnology in the Pulp and Paper Industry - Vancouver, Canada
Duration: 16 Jun 199819 Jun 1998

Conference

Conference7th International Conference on Biotechnology in the Pulp and Paper Industry
Country/TerritoryCanada
CityVancouver
Period16/06/9819/06/98

Fingerprint

Dive into the research topics of 'The in vitro 14C-labelled kraft pulp assay as used for evaluation of laccases and mediators intended for pulp bleaching'. Together they form a unique fingerprint.

Cite this