Bioconversão de resíduos orgânicos pela larva da mosca soldado negro e as suas aplicações na alimentação animal e humana
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2022
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As larvas da Mosca Soldado Negro (BSF) podem ser uma alternativa promissora para dois desafios globais crescentes, a gestão de resíduos orgânicos e a procura por fontes de alimentação mais sustentáveis. Os objetivos deste estudo consistiram em valorizar os subprodutos da indústria alimentar, obter um ingrediente para alimentação animal e ainda verificar a influência da dieta no peso, comprimento e composição nutricional das larvas. Durante 14 dias, foram testadas cinco dietas, com várias combinações de subprodutos, perfazendo um total de 25 unidades experimentais, com as larvas inoculadas no início do estudo. Os subprodutos utilizados foram a couve portuguesa, farelo de arroz, resíduo da fermentação de figos e casca/raiz de alho. Foram avaliados parâmetros como o peso, comprimento das larvas e temperatura das dietas. Os resultados demonstraram que a dieta influenciou significativamente o peso e o comprimento médio das larvas. Em relação à composição nutricional das larvas, o teor de proteína não foi alterado pela dieta fornecida, mas o teor de gordura e cinzas da dieta influenciou diretamente a composição das larvas. Adicionalmente, observou-se que o teor de fibra das dietas não foi um fator limitante quando estas se encontravam em granulometrias de pequenas dimensões. Verificou-se neste estudo que as larvas da BSF podem ser uma ferramenta útil para valorizar subprodutos, promovendo uma economia circular mais sustentável. Palavras-Chave: BSF, bioconversão, resíduos orgânicos, alimentação animal, alimentação humana.
Black soldier fly (BSF) larvae may be a promising alternative for two growing global challenges, organic waste management and the search for more sustainable food sources. The objectives of this study were to valorize the by-products of the food industry, to obtain an ingredient for animal feed, and also to verify the influence of the diet on weight, length and nutritional composition of the larvae. For 14 days, five diets were tested, with various combinations of by-products, totaling 25 experimental units, with the larvae inoculated at the beginning of the study. The by-products used were Portuguese cabbage, rice bran, fig fermentation residue, and garlic peel/root. Parameters such as weight, length of larvae and temperature of the diets were evaluated. The results showed that the diet significantly influenced the average weight and length of the larvae. Regarding the nutritional composition of the larvae, protein content was not altered by the diet provided, but fat and ash content influenced directly the composition of the larvae. Additionally, it was observed that fiber content of the diets was not a limiting factor when diets were in small particle sizes. It was found in this study that BSF larvae can be a useful tool to valorize by-products, promoting a more sustainable circular economy. Keywords: BSF, bioconversion, organic waste, animal feed, human food.
Black soldier fly (BSF) larvae may be a promising alternative for two growing global challenges, organic waste management and the search for more sustainable food sources. The objectives of this study were to valorize the by-products of the food industry, to obtain an ingredient for animal feed, and also to verify the influence of the diet on weight, length and nutritional composition of the larvae. For 14 days, five diets were tested, with various combinations of by-products, totaling 25 experimental units, with the larvae inoculated at the beginning of the study. The by-products used were Portuguese cabbage, rice bran, fig fermentation residue, and garlic peel/root. Parameters such as weight, length of larvae and temperature of the diets were evaluated. The results showed that the diet significantly influenced the average weight and length of the larvae. Regarding the nutritional composition of the larvae, protein content was not altered by the diet provided, but fat and ash content influenced directly the composition of the larvae. Additionally, it was observed that fiber content of the diets was not a limiting factor when diets were in small particle sizes. It was found in this study that BSF larvae can be a useful tool to valorize by-products, promoting a more sustainable circular economy. Keywords: BSF, bioconversion, organic waste, animal feed, human food.
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Orientação: Sofia Van Harten
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MESTRADO INTEGRADO EM MEDICINA VETERINÁRIA, MEDICINA VETERINÁRIA, VETERINÁRIA, RESÍDUOS ORGÂNICOS, ALIMENTAÇÃO ANIMAL, ALIMENTAÇÃO, VETERINARY MEDICINE, ORGANIC WASTE, ANIMAL FEEDING, FEEDING, BIOCONVERSÃO, BIOCONVERSION