A Case Study on Using Hydrogen-Oxidizing Bacteria
Science of the Total Environment 776 (2021) 145764 Contents lists available at ScienceDirect Science of the Total Environment journal homepage: www.elsevier.com/locate/scitotenv An attributional life cycle assessment of microbial protein production: A case study on using hydrogen-oxidizing bacteria Natasha Järviö a,b,c,⁎, Netta-Leena Maljanen a,b,c, Yumi Kobayashi a,b,d, Toni Ryynänen a,b,c, Hanna L. Tuomisto a,b,d,e a Future Sustainable Food Systems-Research Group, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, 00014 University of Helsinki, Finland b Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, P.O. Box 4, 00014 University of Helsinki, Finland c Ruralia Institute, Faculty of Agriculture and Forestry, University of Helsinki, Lönnrotinkatu 7, 50100 Mikkeli, Finland d Department of Agricultural Sciences, Faculty of Agriculture and Forestry, University of Helsinki, P.O. Box 27, 00014 University of Helsinki, Finland e Natural Resources Institute Finland, P.O.Box 2, 00790 Helsinki, Finland HIGHLIGHTS GRAPHICAL ABSTRACT • MP had 53–100% lower environmental impacts than animal-based food protein sources. • Compared to peas and nuts, impacts were 47–99% lower when using hydro- power. • Compared to feed protein sources, MP had a low to average impact. • However, energy demand for MP is 0.03–25 times that of other feed protein. • Using renewable energy increased the decoupling of MP from planetary resources. article info abstract Article history: Novel food production technologies are being developed to address the challenges of securing sustainable and Received 9 December 2020 healthy nutrition for the growing global population.
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