Plate Food Waste in Early Childhood Education: Contextual and Nutritional Drivers with Implications for Sustainable Food Systems

Plate food waste (PFW) in early childhood education is a critical yet understudied issue in Eastern Europe, with implications for nutrition, sustainability, and food security. This study examined PFW in a kindergarten in the Republic of Moldova, encompassing all 58 enrolled children and generating 14,292 meal-level observations through direct weighing of served meals and leftovers. Variance analysis (ANOVA) was used to test the influence of weekday, meal type, age, and gender, while Principal Component Analysis (PCA) explored latent structures of waste determinants. Results showed significant effects of weekday and meal type on PFW, with lunch consistently generating the highest waste levels and snacks the lowest. Gender differences were modest, while the interaction between age and gender indicated heterogeneous developmental patterns in waste behavior. PCA reduced the dataset to three main components: Portion Control, Menu Design, and Serving Strategy, explaining 84.7% of the total variance. These findings provide novel evidence for understanding how contextual and nutritional variables shape children's PFW in early education and offer a replicable framework for reducing PFW and improving dietary adequacy in kindergartens. The study's implications extend to sustainable nutrition planning and early behavioral interventions in preschool settings.