Performance of second-generation microbial protein used as aquaculture feed in relation to planetary boundaries

Carbon and nitrogen present in residual water streams can be converted into microbial protein used as animal feed aquaculture. While is thought to more environmentally sustainable when compared proteins made from fish residues or plants, nothing known about how it performs an absolute sustainability perspective, relative planetary boundaries. Here, a systems-oriented analysis using life cycle assessment (LCA) linked the boundaries framework was conducted assess environmental performance of pilot-scale production starch-rich process aerobic heterotrophs. Results showed that while this microbial-protein indeed performed significantly better than just fishmeal soybean meal for impacts related (N) phosphorus (P) flows, none three feeds were found relation all This constitutes opportunity technology developers scaled up matures.