Solid-state fermentation of lignocellulosic plant residues from Brassica napus by Pleurotus ostreatus |
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Authors: | Ayda Sarikaya Michael R Ladisch |
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Institution: | (1) Laboratory of Renewable Resources Engineering, USA;(2) Department of Agricultural and Biological Engineering, Purdue University, 47907-1295 West Lafayette, IN |
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Abstract: | Solid-state fermentation (SSF) of inedible parts of rapeseed was carried out using a white-rot fungus, Pleurotus ostreatus, to degrade lignocellulosic material for mycelial-single cell protein (SCP) production. This SSF system has the potential
to be adapted to a controlled ecological life support system in space travel owing to the lack of storage space. The system
for converting lignocellulosic material to SCP by P. ostreatus is simple; it can be carried out in a compact reactor. The fungal vegetative growth was better with a particle size of plant
material ranging from 0.42 to 10 mm, whereas lignin degradation of the lignocellulose was the highest with particle sizes
ranging from 0.42 to 0.84 mm. The addition of veratry alcohol (3,4-dimethoxybenzyl alcohol), hydrogen peroxide, and glycerol
promotes lignocellulose degradation by P. ostreatus. The enhancement of bioconversion was also observed when a gas-flow bioreactor was used to supply oxygen and to maintain
the constant moisture of the reactor. With this reactor, approx 85% of the material was converted to fungal and other types
of biomass after 60 d of incubation. |
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Keywords: | Lignocellulose controlled ecological life support system biodegradation Pleurotus ostreatus solid-state fermentation |
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