Prediction of the Metabolic Activity of a MixedBacillus Culture during the Biodegradation of Wastewater from the Potato Industry

Nowak, J.; Lasik, M.; Czarnecki, Z.

doi:10.1002/elsc.200520095

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…Studies on potato processing wastes have mainly focused on wastewater treatment [3,5,14,18] rather than waste utilization. Extraction of valuable products (e.g., polygalacturonase, biogas) from wastes has been studied by several groups [7,12,19].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Potato Starch Processing Wastes to Produce Animal Feed with High Lysine Content

Li¹,

Liu²,

Song³

et al. 2015

Journal of Microbiology and Biotechnology

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This work aims to utilize wastes from the potato starch industry to produce single-cell protein (SCP) with high lysine content as animal feed. In this work, S-(2-aminoethyl)-L-cysteine hydrochloride-resistant Bacillus pumilus E1 was used to produce SCP with high lysine content, whereas Aspergillus niger was used to degrade cellulose biomass and Candida utilis was used to improve the smell and palatability of the feed. An orthogonal design was used to optimize the process of fermentation for maximal lysine content. The optimum fermentation conditions were as follows: temperature of 40°C, substrate concentration of 3%, and natural pH of about 7.0. For unsterilized potato starch wastes, the microbial communities in the fermentation process were determined by terminal restriction fragment length polymorphism analysis of bacterial 16S rRNA genes. Results showed that the dominant population was Bacillus sp. The protein quality as well as the amino acid profile of the final product was found to be significantly higher compared with the untreated waste product at day 0. Additionally, acute toxicity test showed that the SCP product was non-toxic, indicating that it can be used for commercial processing.

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