title: Protein enrichment of sweet potato residue by solid-state cultivation with mono- and co-cultures of amylolytic fungi.
abstract: 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.
authors.affiliation: Department of Agricultural Chemistry, National Taiwan University, 10617, Taipei, Taiwan, Republic of China.
authors.forename: S S
authors.initials: SS
authors.lastname: Yang
authors.forename: H D
authors.initials: HD
authors.lastname: Jang
authors.forename: C M
authors.initials: CM
authors.lastname: Liew
authors.forename: J C
authors.initials: JC
authors.lastname: du Preez