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Solid‐state cultivation of Chaetomium cellulolyticum on alkali‐pretreated sawdust
Author(s) -
Pamment N.,
Robinson C. W.,
Hilton J.,
MooYoung M.
Publication year - 1978
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260201105
Subject(s) - slurry , sawdust , tray , solid state fermentation , fermentation , chemistry , water content , alkali metal , pulp and paper industry , volume (thermodynamics) , food science , botany , materials science , biology , organic chemistry , composite material , geotechnical engineering , physics , quantum mechanics , engineering
Solid‐state fermentations (78% initial moisture content) of alkali‐pretreated Eastern Hard Maple sawdust were conducted in tray and tumble fermentors using chaetomium cellulolyticum . Crude protein content of the solids rose from 0.9 to 11% in the tray fermentor and 8% in the tumble fermentor in 20 days. These levels were almost equal to those achieved in corresponding slurry‐state fermentations (1–5% (w/v)) of the same substrate. Specific growth rates were two to four times lower in the solid‐state fermentors but this was offset by their greater solids‐handling capacity: the rate of protein production per unit volume of fermentation mixture was comparable to that of the 5% (w/v) slurry and two to three times higher than that of the 1% (w/v) slurry.