A First Attempt to Produce Proteins from Insects by Means of a Circular Economy

The worldwide growing consumption of proteins to feed humans and animals has drawn a considerable amount of attention to insect rearing. Insects reared on organic wastes and used as feed for monogastric animals can reduce the environmental impact and increase the sustainability of meat/fish producti...

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Bibliographic Details
Published in:	Animals (Basel) Vol. 9; no. 5; p. 278
Main Authors:	Cappellozza, Silvia, Leonardi, Maria Giovanna, Savoldelli, Sara, Carminati, Domenico, Rizzolo, Anna, Cortellino, Giovanna, Terova, Genciana, Moretto, Enzo, Badaile, Andrea, Concheri, Giuseppe, Saviane, Alessio, Bruno, Daniele, Bonelli, Marco, Caccia, Silvia, Casartelli, Morena, Tettamanti, Gianluca
Format:	Journal Article
Language:	English
Published:	Switzerland MDPI AG 24-05-2019 MDPI
Subjects:	Animals Aquaculture Biodegradation Biomass Circular economy Closed loops Composting Consumption Diet Drying Drying oils drying process earthworms Eggs fat body Feeds Food quality Food supply Food waste Fruits Hermetia illucens Humidity insect meal Insects Laboratories Larval development Meat microbiological analyses midgut Nutrition research Oils & fats Oncorhynchus mykiss Organic wastes Organs Proteins Quality standards rainbow trout Substrates Sustainability Vegetables Vermicomposting waste reduction index Worms Italy aquaculture rainbow trout microbiological analyses midgut waste reduction index insect meal drying process fat body earthworms
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Summary:	The worldwide growing consumption of proteins to feed humans and animals has drawn a considerable amount of attention to insect rearing. Insects reared on organic wastes and used as feed for monogastric animals can reduce the environmental impact and increase the sustainability of meat/fish production. In this study, we designed an environmentally closed loop for food supply in which fruit and vegetable waste from markets became rearing substrate for (BSF- black soldier fly). A vegetable and fruit-based substrate was compared to a standard diet for Diptera in terms of larval growth, waste reduction index, and overall substrate degradation. Morphological analysis of insect organs was carried out to obtain indications about insect health. Processing steps such as drying and oil extraction from BSF were investigated. Nutritional and microbiological analyses confirmed the good quality of insects and meal. The meal was then used to produce fish feed and its suitability to this purpose was assessed using trout. Earthworms were grown on leftovers of BSF rearing in comparison to a standard substrate. Chemical analyses of vermicompost were performed. The present research demonstrates that insects can be used to reduce organic waste, increasing at the same time the sustainability of aquaculture and creating interesting by-products through the linked bio-system establishment.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2076-2615 2076-2615
DOI:	10.3390/ani9050278