NDLI: Valorization of Bread Waste to a Fiber- and Protein-Rich Fungal Biomass

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Valorization of Bread Waste to a Fiber- and Protein-Rich Fungal Biomass

Content Provider	MDPI
Author	Svensson, Sofie Bucuricova, Ludmila Ferreira, Jorge Filho, Pedro Souza Taherzadeh, Mohammad Zamani, Akram
Copyright Year	2021
Description	Filamentous fungi can be used for the valorization of food waste as a value-added product. The goal of this study was the valorization of bread waste through fungal cultivation and the production of value-added products. The fungal cultivation was verified for upscaling from shake flasks to a bench-scale bioreactor (4.5 L) and a pilot-scale bioreactor (26 L). The fungus showed the ability to grow without any additional enzymes or nutrients, and it was able to consume a bread concentration of 4.5% (w/v) over 48 h. The biomass concentration in the shake flasks was 4.1 g/L at a 2.5% bread concentration, which increased to 22.5 g/L at a 15% bread concentration. The biomass concentrations obtained after 48 h of cultivation using a 4.5% bread concentration were 7.2–8.3 and 8.0 g/L in 4.5 and 26 L bioreactors, respectively. Increasing the aeration rate in the 4.5 L bioreactor decreased the amount of ethanol produced and slightly reduced the protein content of the fungal biomass. The initial protein value in the bread was around 13%, while the protein content in the harvested fungal biomass ranged from 27% to 36%. The nutritional value of the biomass produced was evaluated by analyzing the amino acids and fatty acids. This study presents the valorization of bread waste through the production of a protein- and fatty-acid-rich fungal biomass that is simultaneously a source of microfibers.
Starting Page	91
e-ISSN	23115637
DOI	10.3390/fermentation7020091
Journal	Fermentation
Issue Number	2
Volume Number	7
Language	English
Publisher	MDPI
Publisher Date	2021-06-03
Access Restriction	Open
Subject Keyword	Fermentation Paper and Wood Rhizopus Delemar Food Waste Fungal Biomass Bread Waste Filamentous Fungi Mycoprotein Fungal Microfibers
Content Type	Text
Resource Type	Article

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