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- Animal-Origin Food Waste Across Global Supply Chains: Trends, Upcycling Strategies, and Circular Economy SolutionsPublication . Joana Gonçalves; de Pinho Ferreira Guiné, Raquel; Saraiva Ribeiro, Paulo Renato; Florença, Sofia de Guiné e; Gonçalves Oliveira Valente da Cruz-Lopes, Luísa Paula; Ofélia Anjos; Da-Wen SunRecently, the problem of food waste management has attracted the attention of producers, processors, retailers, and consumers due to economic, environmental, food safety, and sustainability consequences, affecting the entire food supply chain. This article reviews data on food waste of animal origin at different stages along the production and transformation systems, from an environmental, economic, or social perspective. Results show differences between developed and developing countries. While in developed countries, most waste occurs at the end of the food chain, in developing countries, most waste occurs in primary production and transportation. Food waste is very expressive in production and retail, but also in final consumption in households and food services. Mitigating measures include upcycling, i.e., recovering valuable food components for industrial use with economic and environmental benefits, and alternatives for food waste reutilization. The role of the consumer is unquestionable, particularly when shopping for food for the household or when consuming food in restaurants or canteens. Hence, it is crucial to understand the behaviours leading to food waste as a way to reduce it and implement strategies to effectively reduce food waste at various levels. The role of education, regulation, and policies is pivotal in achieving minimal food waste.