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Title	*Cultivation of edible filamentous fungus Aspergillus oryzae* on volatile fatty acids derived from anaerobic digestion of food waste and cow manure**
ID_Doc	7725
Authors	Uwineza, C; Mahboubi, A; Atmowidjojo, A; Ramadhani, A; Wainaina, S; Millati, R; Wikandari, R; Niklasson, C; Taherzadeh, MJ
Title	*Cultivation of edible filamentous fungus Aspergillus oryzae* on volatile fatty acids derived from anaerobic digestion of food waste and cow manure**
Year	2021
Published
Abstract	In a circular economy approach, edible filamentous fungi (single cell protein) can be cultivated on volatile fatty acids (VFAs) derived from anaerobic digestion (AD) of organic-rich waste streams. In this study, the effect of pH, concentration/distribution of VFAs, nutrient supplementation, and type of waste on Aspergillus oryzae cultivation on synthetic VFAs, and actual VFAs derived from AD of food waste and cow manure were investigated. The optimal pH for A. oryzae growth on VFAs were 6 and 7 with maximum acetic acid consumption rates of 0.09 g/L. h. The fungus could thrive on high concentrations of acetic (up to 9 g/L) yielding 0.29 g dry biomass/gVFAs(fed). In mixed VFAs cultures, A. oryzae primarily consumed caproic and acetic acids reaching a biomass yield of 0.26 g dry biomass/gVFAs(fed) (containing up to 41% protein). For waste-derived VFAs at pH 6, the fungus successfully consumed 81-100% of caproic, acetic, and butyric acids.
PDF	https://doi.org/10.1016/j.biortech.2021.125410

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