Bread waste - A potential feedstock for sustainable circular biorefineries.

Vinod Kumar, Pedro Brancoli, Vivek Narisetty, Stephen Wallace, Dimitris Charalampopoulos, Brajesh Kumar Dubey, Gopalakrishnan Kumar, Amit Bhatnagar, Shashi Kant Bhatia, Mohammad J Taherzadeh

Journal: Bioresource technology 2023;369():128449

PMID: 36496119

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Abstract

The management of staggering volume of food waste generated (∼1.3 billion tons) is a serious challenge. The readily available untapped food waste can be promising feedstock for setting up biorefineries and one good example is bread waste (BW). The current review emphasis on capability of BW as feedstock for sustainable production of platform and commercially important chemicals. It describes the availability of BW (>100 million tons) to serve as a feedstock for sustainable biorefineries followed by examples of platform chemicals which have been produced using BW including ethanol, lactic acid, succinic acid and 2,3-butanediol through biological route. The BW-based production of these metabolites is compared against 1G and 2G (lignocellulosic biomass) feedstocks. The review also discusses logistic and supply chain challenges associated with use of BW as feedstock. Towards the end, it is concluded with a discussion on life cycle analysis of BW-based production and comparison with other feedstocks.

Address: School of Water, Energy, and Environment, Cranfield University, Cranfield MK43 0AL, United Kingdom. Electronic address: [email protected].; Swedish Centre for Resource Recovery, University of Borås, Borås 501 90, Sweden.; School of Water, Energy, and Environment, Cranfield University, Cranfield MK43 0AL, United Kingdom.; Institute of Quantitative Biology, Biochemistry and Biotechnology, School of Biological Sciences, University of Edinburgh, Unied Kingdom.; Department of Food and Nutritional Sciences, University of Reading, United Kingdom.; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India.; Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036 Stavanger, Norway.; Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland.; Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, South Korea.

DOI: 10.1016/j.biortech.2022.128449

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MeSH Terms: Bread, Refuse Disposal, Biofuels, Biomass, Succinic Acid