Reduce, reuse and recycle: A critical review of scientific knowledge on food loss and waste in Chile

Reduce, reuse, and recycle "the 3Rs rule" are strategies that promote a responsible attitude towards the environment and contribute to sustainable development. The objective of this review was to analyze the scientific publications generated in Chile in the area of food loss and waste (FLW), with a focus on it s quantification and based on "the 3Rs rule". A literature search was carried out in three databases: Web of Science, Pubmed, and Scopus. The selected original articles were clas- sified according to the type of action, stage of the food supply chain, food group, FLW quantification, and type of strategy (reduction, reuse, or recycling). Five review articles and 31 original articles were found. The revalorization of agro-industrial by-products was the main initiative involved in the FLW studies (n= 22). The type of by-product was also analyzed, and it was found that the phenolic compounds from fruit s are the most studied. Only 32% (12/31) of the articles reported information on FLW quantification. The revalorization of by-products added to food recovery for energy production (n= 4) and composting (n= 2) make recycling the most researched strategy. These antecedent s show the need to complement the national research at the level of actions that point more towards reducing and reusing of FLW and it s quantification. This knowledge will allow the establishment of baselines and monitoring plans that contribute to the fulfillment of the Sustainable Development Goals in Chile.