Lignin degradation, ligninolytic enzymes activities and exopolysaccharide production by Grifola frondosa strains cultivated on oak sawdust

Fourteen strains of Grifola frondosa (Dicks.) S. F. Gray, originating from different regions (Asia, Europe and North America) were tested for lignin degradation, ligninolytic enzyme activities, protein accumulation and exopolysaccharide production during 55 days of cultivation on oak sawdust. Lignin...

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Bibliographic Details
Published inBrazilian journal of microbiology Vol. 42; no. 3; pp. 1101 - 1108
Main Authors Fernandes, Nona A, Isikhuemhen, Omoanghe S, Ohimain, Elijah I
Format Journal Article
LanguageEnglish
Portuguese
Published Brazil Springer Nature B.V 01.09.2011
Sociedade Brasileira de Microbiologia
Subjects
Biodegradation
Biotechnology
Enzymes
MICROBIOLOGY
Proteins
exopolysaccharide
lignin degradation
peroxidase
laccase
Grifola frondosa
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Summary:Fourteen strains of Grifola frondosa (Dicks.) S. F. Gray, originating from different regions (Asia, Europe and North America) were tested for lignin degradation, ligninolytic enzyme activities, protein accumulation and exopolysaccharide production during 55 days of cultivation on oak sawdust. Lignin degradation varied from 2.6 to7.1 % of dry weight of the oak sawdust substrate among tested strains. The loss of dry matter in all screened fungi varied between 11.7 and 33.0%, and the amount of crude protein in the dry substrate varied between 0.94 to 2.55%. The strain, MBFBL 596, had the highest laccase activity (703.3 U/l), and the maximum peroxidase activity of 22.6 U/l was shown by the strain MBFBL 684. Several tested strains (MBFBL 21, 638 and 662) appeared to be good producers of exopolysaccharides (3.5, 3.5 and 3.2 mg/ml respectively).
ISSN:1517-8382
1678-4405
1678-4405
DOI:10.1590/S1517-83822011000300031