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Appl Environ Microbiol. 1987 June; 53(6): 1304-1306

Delignification of Wheat Straw by Pleurotus spp. under Mushroom-Growing Conditions

Linda J. Tsang, Ian D. Reid^,* and Ewen C. Coxworth

¹ Saskatchewan Research Council, Saskatoon, Saskatchewan, Canada S7N 0X1, and Plant Biotechnology Institute, National Research Council of Canada, Saskatoon, Saskatchewan, Canada S7N 0W9²

ABSTRACT

Pleurotus sajor-caju, P. sapidus, P. cornucopiae, and P. ostreatus mushrooms were produced on unsupplemented wheat straw. The yield of mushrooms averaged 3.6% (dry-weight basis), with an average 18% straw weight loss. Lignin losses (average, 11%) were lower than cellulose (20%) and hemicellulose (50%) losses. The cellulase digestibility of the residual straw after mushroom harvest was generally lower than that of the original straw. It does not appear feasible to simultaneously produce Pleurotus mushrooms and a highly delignified residue from wheat straw.

^* Corresponding author.

Present address: Biotechnology Research Institute, National Research Council of Canada, Montreal, Quebec, Canada H4P 2R2.

Issued as National Research Council of Canada paper IRB-87-006-26304.