Production of single-cell protein from cellulose by Aspergillus terreus [Fungi]

Cellulose fermentation studies were conducted with a thermotolerant strain of Aspergillus terreus . Batch cultivation of A. terreus using purified or complex cellulose showed that 80-88% of the available cellulose was utilized in 30-36 h with an average doubling time of 7.5-8.3 h. The protein conten...

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Bibliographic Details
Published in:Biotechnology and bioengineering 1983, Vol.25 (6), p.1509-1519
Main Authors: Miller, T F, Srinivasan, V R
Format: Article
Language:English
Subjects:
Aspergillus terreus
cellulose
fermentation
single-cell protein
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Summary:Cellulose fermentation studies were conducted with a thermotolerant strain of Aspergillus terreus . Batch cultivation of A. terreus using purified or complex cellulose showed that 80-88% of the available cellulose was utilized in 30-36 h with an average doubling time of 7.5-8.3 h. The protein content in the biomass ranged from 23 to 38%. Semicontinuous cultivation studies, in which 90% of the biomass was withdrawn at the end of the growth cycle, indicated that 84% of added cellulose was utilized with the biomass containing 32% crude protein. No loss in cellulose consumption, growth rate, or protein production occurred through two growth cycles. Continuous cultivation of A. terreus showed that 7-84% cellulose consumption occurred over growth temperatures ranging from 35 to 45 degree C. Maximum specific growth rates occurred at 40 and 45 degree C with a minimum doubling time of 4.9 h.
ISSN:0006-3592
1097-0290
DOI:10.1002/bit.260250608