Abstract
The circular bioeconomy has been identified as a paradigm useful in transforming food systems to a more sustainable state. However, there is no clear method to identify in which cases circular technologies are preferential over existing conventional practices and how to compare circular technologies against each other in a portfolio of technologies. In this Perspective, we present a framework to assess the potential of circular food system technologies, summarized in a matrix to assign clear policy and adoption priorities. We then use this framework to compare the net market and spillover benefits of three case studies of circular technologies: low-opportunity cost feeds in egg production systems in the Netherlands, biodigesters on dairy farms in Uruguay, and bonechar fertilizer production in Ethiopia. Our framework offers a starting point for future research and policy in adopting circular food system technologies in the food system.
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