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Methane fermentation of Japanese cedar wood pretreated with a white rot fungus, Ceriporiopsis subvermispora

Paper ID Volume ID Publish Year Pages File Format Full-Text
25780 43599 2006 7 PDF Available
Title
Methane fermentation of Japanese cedar wood pretreated with a white rot fungus, Ceriporiopsis subvermispora
Abstract

Methane fermentation of Japanese cedar wood was carried out after pretreatment with four strains of white rot fungi, Ceriporiopsis subvermispora ATCC 90467, CZ-3, CBS 347.63 and Pleurocybella porrigens K-2855. These fungi were cultivated on wood chip media with and without wheat bran for 4–8 weeks. The pretreated wood chip was fermented anaerobically with sludge from a sewage treatment plant. Pretreatments with C. subvermispora ATCC 90467, CZ-3 and CBS 347.63 in the presence of wheat bran for 8 weeks decreased 74–76% of β-O-4 aryl ether linkages in the lignin to accelerate production of methane. After fungal treatments with C. subvermispora ATCC 90467 and subsequent 30-days methane fermentation, the methane yield reached 35 and 25% of the theoretical yield based on the holocellulose contents of the decayed and original wood, respectively. In contrast, treatment with the three strains of C. subvermispora without wheat bran cleaved 15–26% of the linkage and produced 6–9% of methane. There were no significant accelerating effects in wood chips treated with P. porrigens which has a lower ability to decompose the lignin. Thus, it was found that C. subvermispora, with a high ability to decompose aryl ether bonds of lignin, promoted methane fermentation of softwood in the presence of wheat bran.

Keywords
White rot fungi; Methane fermentation; Lignin; Softwood; Japanese cedar
First Page Preview
Methane fermentation of Japanese cedar wood pretreated with a white rot fungus, Ceriporiopsis subvermispora
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 123, Issue 1, 3 May 2006, Pages 71–77
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering