Pitch degradation with white rot fungi
AssigneeSandoz Ltd.
InventorsRobert A. Blanchette, Roberta L. Farrell, Sara Iverson
Life of this patent
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Abstract
The fungi Schizophyllum commune, Trichaptum biforme and Phanerochaete gigantea are useful in reducing the pitch content of pulps and pulpwoods used in making cellulosic products.
Claims24
A process for reducing the pitch content of pulpwood or of a pulp having at least 60% by weight of its original lignin content comprising applying to the pulpwood or pulp, one or more inocula of one or more fungi capable of reducing pitch content and selected from the group consisting of Schizophyllum commune, Trichaptum biforme, and Phanerochaete gigantea, the inoculation being of a number and in an sufficient upon fungal growth from the inoculation to reduce the pitch content of the pulpwood or pulp, and maintaining the inoculated pulpwood or pulp under conditions which allow fungal growth from the inoculation for a time sufficient to effect a reduction of the pitch content of the pulpwood or pulp by the fungal growth.
A biologically pure strain of a fungus of the species Schizophyllum commune with all of the identifying characteristics of the strain of NRRL Accession No. 21056.
A biologically pure strain of a fungus of the species Trichaptum biforme with all of the identifying characteristics of the strain of NRRL Accession No. 21055.
A biologically pure strain of a fungus of the species Phanerochaete gigantea with all of the identifying characteristics of the strain of NRRL Accession No. 21054.
Dependencies are inferred from the claim text.