Lignin depolymerase catalyzed biobleaching of softwood kraft pulp

Nugzar Nutsubidze, Simo Sarkanen

Research output: Contribution to conferencePaperpeer-review

Abstract

A crude enzyme preparation has been isolated from the white-rot fungus Trametes cingulata that depolymerizes high molecular weight softwood kraft lignin components completely. A single treatment with partially purified extracellular T. cingulata culture solution in the presence of approximately 104 M FAD, when followed by a brief extraction with dilute aqueous NaOH at ambient temperatures, engenders a 50% reduction in the kappa number of Jack pine kraft pulp brownstock. Thus the lignin depolymerase from T. cingulata appears to be well suited to delignifying unbleached softwood kraft pulp directly.

Original languageEnglish (US)
PagesG6-1-G6-5
StatePublished - Jan 1 1997
EventProceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2) - Montreal, Can
Duration: Jun 9 1997Jun 12 1997

Other

OtherProceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2)
CityMontreal, Can
Period6/9/976/12/97

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