Method of obtaining cellulase deficient strains of white-rot fungi
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United States of America Patent
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Jun 19, 1990
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N/A
app pub date -
May 16, 1986
filing date -
Sep 19, 1984
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Expired
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Abstract
A method is described of obtaining cellulase deficient strains which have great ability to degrade lignin at the same time. The method comprises crossing a homokaryotic cellulase deficient mutant of a white-rot fungus having a full sexual cycle with a homokaryotic strain of the same fungus, this strain having great lignin degrading ability. Strains are subsequently selected that have great lignin degrading ability in combination with cellulase deficiency. A suitable white-rot fungis is Phanerochaete chrysosporium. The crossings are suitably performed for a plurality of generations. The strain of white-rot fungus obtained is used for delignifying lignocellulosic material.
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