Integrated process for protein, pigments, and biogas production from baker's yeast wastewater using filamentous fungi.

Bioresource Technology
Seyed Sajad HashemiMohammad J Taherzadeh

Abstract

Baker's yeast production industry generates large quantities of high chemical oxygen demand (COD) wastewater. The integration of baker's yeast wastewater (BYW) for an innovative two-step waste biorefinery process by producing protein-rich fungal biomass and biogas along with COD and nutrients removal was the main object of the present research. In the first step, fungal biomass production from BYW was investigated using four species of filamentous fungi. The maximum biomass yield of 5.13 g/L BYW containing 43.8% mycoprotein and 36.3% COD removal was achieved by A. oryzae. In the second step, to produce biogas and further remove organic matter, the effluent of fungal fermentation was subjected to anaerobic digestion and COD removal between 22.4 and 44.2% was obtained. Overall, 1 m3 of BYW yielded 5.13 kg of protein-rich biomass and 1.42 m3 of methane. Additionally, pigment production using N. intermedia was investigated, and 1.54 mg carotenoids/g biomass was produced.

References

Aug 2, 2003·Chemosphere·Shihwu Sung, Tao Liu
Aug 1, 1959·Canadian Journal of Biochemistry and Physiology·E G BLIGH, W J DYER
Apr 15, 2004·Waste Management·Trine L HansenThomas H Christensen
Dec 18, 2007·Journal of Hazardous Materials·M Kobya, S Delipinar
Nov 7, 2012·Bioresource Technology·Jorge A FerreiraMohammad J Taherzadeh
Feb 26, 2013·Bioresource Technology·Saoharit NitayavardhanaSamir Kumar Khanal
Nov 26, 2013·Bioresource Technology·M L RasmussenJ Hans van Leeuwen
Mar 22, 2016·Bioresource Technology·Jorge A FerreiraMohammad J Taherzadeh
Sep 29, 2017·Fungal biology and biotechnology·Rebecca GmoserMohammad J Taherzadeh
Apr 19, 2019·Bioprocess and Biosystems Engineering·Jone Ibarruri, Igor Hernández

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