AQUACULTURE

Bioconversion of Pufferfish and Tilapia Sludge by Neanthes Acuminata

The study evaluated the use of the polychaete Neanthes Acuminata for the bioconversion of pufferfish and tilapia aquaculture sludge in recirculating systems. A high survival rate (80–90%) and increased growth over eight weeks were observed. The results indicate the species’ potential for the reuse of aquaculture solid waste and biomass production.

PMC

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Preparation Method and Application of a Nanocomposite for Nervous Necrosis Virus

The invention describes a nanocomposite composed of PLGA, PEI, and siRNA for the prevention of Nervous Necrosis Virus (NNV) in aquatic animals.
The siRNA is selected to inhibit the expression of the viral capsid protein after simulation and expression in cells. The system is applied at the embryonic stage, blocking infection in fertilized fish eggs. Technology increases larval survival and proposes a new approach for early viral disease control in aquaculture.

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MARINE BIOTECHNOLOGY

Red Macroalgae as a Source of Antioxidant Ingredients for Functional Foods via a Biorefinery Approach.

The study evaluated three red macroalgae from Madeira as sources of functional ingredients with antioxidant and neuroprotective potential, using a sequential biorefinery approach. Protein, phenolic, and polysaccharide fractions were obtained, each showing different bioactive activities. The extracts demonstrated strong antioxidant capacity and inhibition of enzymes related to neurodegeneration and glycemic control. The results highlight the potential of these macroalgae for functional foods and the importance of optimizing biorefinery processes

PMC

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Methods for Producing Polyunsaturated Fatty Acids from Aquaculture Residues

This application relates to the valorization of aquaculture residues through the production of polyunsaturated fatty acids (PUFAs). The process involves fermenting these residues with marine protist microorganisms, such as species of Sphaeroforma, Crypthecodinium, Aurantiochytrium, Thraustochytrium, and Oblongichytrium. The result is the generation of PUFA-rich biomass, which can then be further isolated. The application also includes the resulting biomass, its uses, and a kit for producing PUFAs from these residues.

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LIVING MARINE RESOURCES

Marine Algae Hydrogels as Emerging Biomaterials for Medicine

Marine algae, microalgae, and cyanobacteria are promising sustainable sources of biomacromolecules for hydrogel development in biomedical applications. Their phycocolloids, such as alginate, agar, carrageenan, and ulvan, offer biocompatibility, bioactivity, and tunable gelation properties. These hydrogels, produced through various crosslinking strategies, are widely explored for tissue engineering, drug delivery, and bioprinting. Despite their potential, challenges include variability, purification issues, and mechanical limitations, driving the need for improved production and standardization.

PMC

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Red Algae Biomass Extract, and Cosmetic Use for Eliminating Skin Imperfections

The present invention relates to a photosensitizing polar biomass extract extracted from phycocyanin-producing organisms, in particular unicellular red algae (URA) or cyanobacteria, and to the cosmetic use thereof for preventing and/or eliminating skin imperfections, i.e. for improving the look of the skin.

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The Technological Sonar is B2E CoLAB’s monthly feature dedicated to the blue bioeconomy. Each edition compiles the latest scientific studies and patents in aquaculture, marine biotechnology, and living marine resources, keeping researchers, companies, and decision-makers at the forefront of ocean sector innovation. Click here to view all editions.