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Transforming Coffee and Meat By-Products into Protein-Rich Meal via Black Soldier Fly Larvae (Hermetia illucens)
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Transforming Coffee and Meat By-Products into Protein-Rich Meal via Black Soldier Fly Larvae (Hermetia illucens)
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Journal Article
Transforming Coffee and Meat By-Products into Protein-Rich Meal via Black Soldier Fly Larvae (Hermetia illucens)
2025
Overview
In response to increasing food waste and the necessity for sustainable resource utilization, this study evaluated the effectiveness of black soldier fly (Hermetia illucens) larvae in converting a mixture of coffee and meat residues into protein-rich meal suitable for animal feed. A two-component mixture design optimized the substrate composition, followed by model validation and a comprehensive nutritional characterization of the larvae-derived protein. The larval meal contained 30–39 g of protein per 100 g (dry basis). The results indicated that increasing the meat residue content to 35% in the substrate maximized the protein yield. The optimized larval meal contained 52.9 g of protein per 100 g (dry basis) and favorable parameters such as moisture and fat, demonstrating a nutrient profile suitable for aquaculture feed. These findings suggested that Hermetia illucens larvae could convert agro-industrial by-products into high-quality protein. Coffee and meat residues served as suitable substrates for larval growth, supporting proper metabolic development and yielding a high bioconversion rate. This work contributes to the constant efforts in food waste valorization by integrating nutrient recovery processes into circular economy principles.
Publisher
MDPI AG
Subject
