Industry 4.0 Technologies in Circular Food Supply Chains: A Systematic Literature Review

This paper explores the transformative role of Industry 4.0 (I4) technologies—specifically Blockchain, Internet of Things (IoT), Artificial Intelligence (AI), Big Data Analytics (BDA), Smart Factories, Robotics—in enabling the circular food supply chain (FSC). Through a systematic literature review, we identify how these technologies contribute to key circular economy (CE) strategies in FSC, comprising reduction, redistribution, valorisation, and nutrient recovery. We also examine implementation barriers, including digital infrastructure gaps, regulatory misalignments, and data interoperability. A conceptual framework is proposed to map digital solutions to CE principles in food systems. Our findings offer actionable insights for scaling up digital-enabled circular practices in the agri-food sector.