Improving the Lipid Profile of Black Soldier Fly (Hermetia illucens) Larvae for Marine Aquafeeds: Current State of Knowledge

The replacement of fish meal and fish oil by insect-based ingredients in the formulation of marine aquafeeds can be an important step towards sustainability. To pursue this goal, the modulation of the lipid profile of black soldier fly larvae (Hermetia illucens) has received great attention. While i...

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Bibliographic Details
Published inSustainability Vol. 14; no. 11; p. 6472
Main Authors Rodrigues, Daniela P, Ameixa, Olga M. C. C, Vázquez, José Antonio, Calado, Ricardo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2022
Subjects
Algae
Amino acids
Biotechnology
Coffee
Costs
Docosahexaenoic acid
Eicosapentaenoic acid
Fatty acids
Fish
Fish meal
Fish oils
Freshwater resources
Hermetia illucens
Ingredients
Keywords
Larvae
Lipids
Marine fish
Metabolism
Oilseeds
Omega-3 fatty acids
Proteins
Regulatory approval
Seafood
Shellfish
Soldiers
Sustainability
Unsaturated fatty acids
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Summary:The replacement of fish meal and fish oil by insect-based ingredients in the formulation of marine aquafeeds can be an important step towards sustainability. To pursue this goal, the modulation of the lipid profile of black soldier fly larvae (Hermetia illucens) has received great attention. While its nutritional profile can shift with diet, the ability to modulate its lipidome is yet to be understood. The present work provides an overview of the lipid modulation of H. illucens larvae through its diet, aiming to produce a more suitable ingredient for marine aquafeeds. Marine-based substrates significantly improve the lipid profile of H. illucens larvae, namely its omega-3 fatty acids profile. An improvement of approximately 40% can be achieved using fish discards. Substantial levels of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), two essential fatty acids for marine fish and shrimp species, were recorded in H. illucens larvae fed on fish discards and coffee silverskin with Schyzochytrium sp. Unfortunately, these improvements are still deeply connected to marine-based bioresources, some still being too costly for use at an industrial scale (e.g., microalgae). New approaches using solutions from the biotechnology toolbox will be decisive to make H. illucens larvae a feasible alternative ingredient for marine aquafeeds without having to rely on marine bioresources.
ISSN:2071-1050
2071-1050
DOI:10.3390/su14116472