The Potential of Brewer’s Spent Grain in the Circular Bioeconomy: State of the Art and Future Perspectives

Brewer’s spent grain (BSG) accounts for approximately 85% of the total mass of solid by-products in the brewing industry and represents an important secondary raw material of future biorefineries. Currently, the main application of BSG is limited to the feed and food industry. There is a strong need...

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Published inFrontiers in bioengineering and biotechnology Vol. 10; p. 870744
Main Authors Zeko-Pivač, Anđela, Tišma, Marina, Žnidaršič-Plazl, Polona, Kulisic, Biljana, Sakellaris, George, Hao, Jian, Planinić, Mirela
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 17.06.2022
Subjects
bio-based products
biochemical transformation
Bioengineering and Biotechnology
Brewer’s spent grain
circular bioeconomy
sustainability
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Summary:Brewer’s spent grain (BSG) accounts for approximately 85% of the total mass of solid by-products in the brewing industry and represents an important secondary raw material of future biorefineries. Currently, the main application of BSG is limited to the feed and food industry. There is a strong need to develop sustainable pretreatment and fractionation processes to obtain BSG hydrolysates that enable efficient biotransformation into biofuels, biomaterials, or biochemicals. This paper aims to provide a comprehensive insight into the availability of BSG, chemical properties, and current and potential applications juxtaposed with the existing and emerging markets of the pyramid of bio-based products in the context of sustainable and circular bioeconomy. An economic evaluation of BSG for the production of highly valuable products is presented in the context of sustainable and circular bioeconomy targeting the market of Central and Eastern European countries (BIOEAST region).
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Reviewed by: Joachim Venus, Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Germany
Elsa Vieira, Chemistry and Technology Network (REQUIMTE), Portugal
This article was submitted to Bioprocess Engineering, a section of the journal Frontiers in Bioengineering and Biotechnology
Edited by: Isabel Belo, University of Minho, Portugal
ISSN:2296-4185
2296-4185
DOI:10.3389/fbioe.2022.870744