Utilization of Agro-Industrial Residues in the Rearing and Nutritional Enrichment of Zophobas atratus Larvae: New Food Raw Materials.
Renata Quartieri NascimentoCláudio Vaz Di Mambro RibeiroNelson Barros ColautoLarissa da SilvaPaulo Vitor França LemosEderlan de Souza FerreiraGiani Andrea LindeBruna Aparecida Souza MachadoPedro Paulo Lordelo Guimarães TavaresAline Camarão Telles BiasotoMarcelo Andres Umsza GuezNatália Santana CarvalhoDenilson de Jesus AssisJania Betânia Alves da SilvaCarolina Oliveira de SouzaPublished in: Molecules (Basel, Switzerland) (2022)
Edible insects are a potential alternative food source of high feed conversion efficiency and protein content. Zophobas atratus is an edible insect that adapts to different diets, enabling sustainable rearing by adding value to by-products and agro-industrial residues. This study aimed to evaluate the performance and nutritional characterization of Zophobas atratus larvae fed with different proportions of grape residue. Physicochemical analysis of the diets and larvae (AOAC procedures), fatty acid profile (chromatographic techniques), metals and non-metals (inductively coupled plasma optical emission spectrometry), larval mass gain, feed conversion efficiency, and mortality rate were assessed. The replacement of 25% of the conventional diet with grape residue increased lipid, ash, and fiber contents and reduced protein, carbohydrates, and energy. It promoted greater mass gain, lower mortality rate, and reduced larval growth time by 51%. Among the replacements, 25% resulted in the second-highest content of calcium, sodium, magnesium, and zinc, and the lowest content of potassium and phosphorus in the larvae. The 100% replacement resulted in the highest amounts of C18:2n6 (27.8%), C18:3n3 (2.2%), and PUFA (30.0%). Replacing 25% of the conventional diet with grape residue is equivalent to the conventional diet in many aspects and improves several larvae performance indices and nutritional values.
Keyphrases
- aedes aegypti
- drosophila melanogaster
- weight loss
- human health
- zika virus
- fatty acid
- physical activity
- amino acid
- heavy metals
- cardiovascular events
- risk assessment
- high resolution
- wastewater treatment
- risk factors
- health risk
- type diabetes
- protein protein
- health risk assessment
- binding protein
- solid state
- solid phase extraction