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Introduction: Nutrition is vital for human survival, but unsustainable food production practices and eating habits can negatively impact the ecosystem. Under the premise of offering sustainable protein benefits while using less land, water, and greenhouse gas emissions than meat, poultry, and dairy products, edible insects are becoming increasingly popular in Western countries as an alternative to animal protein. This is prompting research into their food safety. Objectives: This study aimed to analyze the microbiological quality of fresh Tenebrio molitor larvae subjected to various feeding regimes (water, potato, carrot, vegetable mix) and from three production batches. Material and methods: Evaluation of the impact of different diets (water, potato, carrot, vegetable mix) was performed for 4-week-old larvae, corresponding to an active growth phase characterized by high feeding activity, under controlled conditions (~27.5 °C, ~65% relative humidity, 12:12 h light: dark photoperiod). The experiment was conducted across three independent production batches. Parameters tested: Total Viable Bacteria (TVC), Lactic Acid Bacteria (LAB), Enterobacteriaceae; enterococci; yeasts and molds, aerobic and anaerobic bacilli spores and staphylococci. Conclusion: Preliminary findings suggest that some microbiological parameters vary between batches; Seasonal variations may influence the microbiological profile of mealworm larvae, highlighting the need for further research in this area; Entomophagy presents a promising solution to one of the fundamental challenges outlined in the 2030 Agenda for Sustainable Development.
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Carvalho, T. B. D., Pereira, I., Barbosa, J. B., & Ribeiro, T. et al. (2025). Influence of feeding strategies and production cycles on the microbial quality of fresh tenebrio molitor larvae. 1-1. Poster session presented at Ciência 2025, Carcavelos, Portugal.