1.
World J Microbiol Biotechnol
; 9(2): 258-64, 1993 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-24419961
RESUMO
The degree of protein enrichment of sweet potato residue by different amylolytic moulds in solid-state cultivation was much greater than that obtained using amylolytic yeasts. The optimum initial moisture content for protein enrichment was about 65% (w/w). Adding nitrogen sources to the culture twice (at the start of the incubation and after 24 h) considerably improved the final protein content. A co-culture of amylolytic mycelial fungi yielded a product with 32% (w/w) crude protein after 4 days' incubation at 30°C. In a column reactor, the highest temperatures reached were 42°C and 40°C and the minimum O2 concentrations were 1.5% and 2.5% of full saturation in the central and bottom layers, respectively.