Sweet potato residue, a starchy agricultural waste, was used as a substrate to produce microbial protein by Fusarium moniliforme and Saccharomyces cerevisiae in submerged fermentation. Acid- and gamma-irradiation-pretreated sweet potato residue enhanced the biomass yield and protein production when the residue was fermented with F. moniliforme and S. cerevisiae. A mixed culture of F. moniliforme and S. cerevisiae efficiently and rapidly utilized free sugars; the maximal biomass yield (13.96 g/l) and protein production (65.8%) were obtained after 3 days fermentation. Lower carbon utilization by the two microbial strains occurred in the waste-containing media as compared to control, increasing the economic value of the waste usage.
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Received 25 October 2001/ Accepted in revised form 22 June 2002
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Aziz, N., Mohsen, G. Bioconversion of acid- and gamma-ray-treated sweet potato residue to microbial protein by mixed cultures. J Ind Microbiol Biotech 29, 264–267 (2002). https://doi.org/10.1038/sj.jim.7000297
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DOI: https://doi.org/10.1038/sj.jim.7000297