Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality
The constantly increasing aquaculture production generates high amounts of biowaste worldwide, which must be properly treated in order to keep aquaculture’s footprint low. This study aimed at evaluating the bioconversion of aquaculture waste streams (RAS sludge, fish trimmings, and harvest macroalga...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Aquaculture Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513425003473 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849392467249463296 |
|---|---|
| author | Ivã Guidini Lopes Viktoria Wiklicky Cecilia Lalander |
| author_facet | Ivã Guidini Lopes Viktoria Wiklicky Cecilia Lalander |
| author_sort | Ivã Guidini Lopes |
| collection | DOAJ |
| description | The constantly increasing aquaculture production generates high amounts of biowaste worldwide, which must be properly treated in order to keep aquaculture’s footprint low. This study aimed at evaluating the bioconversion of aquaculture waste streams (RAS sludge, fish trimmings, and harvest macroalgae waste) using black soldier fly (Hermetia illucens, BSF) larvae and the quality of the resulting larval biomass. The study was conducted in a modified shipping container simulating a large-scale setting and the diets were formulated using brewery spent grains and cabbage as base, mixing in aquaculture waste, aiming to treat the highest inclusion rate possible. A bioconversion efficiency of above 20 %DM and a material reduction generally above 55 %DM were observed, while generating a larval biomass that was rich in protein (> 35 %DM), essential amino acids and fatty acids. The larvae reared on fish trimmings (from an anchovy processing plant) had the highest crude fat content (29.0 ± 1.1 %DM) in relation to other treatments, while the macroalgae waste dietary inclusion generated larvae with low fat content (14.7 ± 1.5 %DM on average). Interestingly, it was observed that the addition of aquaculture wastes, even in small inclusion levels (between 15 % and 25 % on wet basis), reduced the concentration of saturated fatty acids in the larvae (especially lauric acid and pentadecanoic acid). It was concluded that BSF larvae are able to bioconvert varied aquaculture waste streams and it is possible to produce tailored larval biomass by adding such waste streams in their diets, enabling the production of a protein ingredient with specific traits to be used in aquafeeds. |
| format | Article |
| id | doaj-art-746a87f8c7754076ba0d7533eda962d6 |
| institution | Kabale University |
| issn | 2352-5134 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj-art-746a87f8c7754076ba0d7533eda962d62025-08-20T03:40:45ZengElsevierAquaculture Reports2352-51342025-09-014310296110.1016/j.aqrep.2025.102961Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval qualityIvã Guidini Lopes0Viktoria Wiklicky1Cecilia Lalander2Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp 23422, Sweden; Corresponding author.Department of Energy and Technology, Swedish University of Agricultural Sciences, Uppsala 75651, SwedenDepartment of Energy and Technology, Swedish University of Agricultural Sciences, Uppsala 75651, SwedenThe constantly increasing aquaculture production generates high amounts of biowaste worldwide, which must be properly treated in order to keep aquaculture’s footprint low. This study aimed at evaluating the bioconversion of aquaculture waste streams (RAS sludge, fish trimmings, and harvest macroalgae waste) using black soldier fly (Hermetia illucens, BSF) larvae and the quality of the resulting larval biomass. The study was conducted in a modified shipping container simulating a large-scale setting and the diets were formulated using brewery spent grains and cabbage as base, mixing in aquaculture waste, aiming to treat the highest inclusion rate possible. A bioconversion efficiency of above 20 %DM and a material reduction generally above 55 %DM were observed, while generating a larval biomass that was rich in protein (> 35 %DM), essential amino acids and fatty acids. The larvae reared on fish trimmings (from an anchovy processing plant) had the highest crude fat content (29.0 ± 1.1 %DM) in relation to other treatments, while the macroalgae waste dietary inclusion generated larvae with low fat content (14.7 ± 1.5 %DM on average). Interestingly, it was observed that the addition of aquaculture wastes, even in small inclusion levels (between 15 % and 25 % on wet basis), reduced the concentration of saturated fatty acids in the larvae (especially lauric acid and pentadecanoic acid). It was concluded that BSF larvae are able to bioconvert varied aquaculture waste streams and it is possible to produce tailored larval biomass by adding such waste streams in their diets, enabling the production of a protein ingredient with specific traits to be used in aquafeeds.http://www.sciencedirect.com/science/article/pii/S2352513425003473Black soldier flyFishResiduesFatty acidsAlgae |
| spellingShingle | Ivã Guidini Lopes Viktoria Wiklicky Cecilia Lalander Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality Aquaculture Reports Black soldier fly Fish Residues Fatty acids Algae |
| title | Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality |
| title_full | Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality |
| title_fullStr | Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality |
| title_full_unstemmed | Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality |
| title_short | Bioconversion of aquaculture waste blended with vegetable by-products using Hermetia illucens larvae: Process parameters and larval quality |
| title_sort | bioconversion of aquaculture waste blended with vegetable by products using hermetia illucens larvae process parameters and larval quality |
| topic | Black soldier fly Fish Residues Fatty acids Algae |
| url | http://www.sciencedirect.com/science/article/pii/S2352513425003473 |
| work_keys_str_mv | AT ivaguidinilopes bioconversionofaquaculturewasteblendedwithvegetablebyproductsusinghermetiaillucenslarvaeprocessparametersandlarvalquality AT viktoriawiklicky bioconversionofaquaculturewasteblendedwithvegetablebyproductsusinghermetiaillucenslarvaeprocessparametersandlarvalquality AT cecilialalander bioconversionofaquaculturewasteblendedwithvegetablebyproductsusinghermetiaillucenslarvaeprocessparametersandlarvalquality |