June marks the beginning of a new journey of discovery in diverse scientific fields. From omega-3 enriched diets that boost the antiviral defenses of Atlantic salmon, to *Sargassum horneri* extracts revolutionizing skincare, innovation is thriving! Dive into the latest news on shrimp freshness indicators, yeast fermentation in deep seawater, anti-alopecia advancements, and optimized fish protein hydrolysates. Explore these groundbreaking studies and be inspired!

AQUACULTURE

Vegetable fatty acids, omega-3 and omega-6, differentially modulate antiviral and antibacterial immune responses in Atlantic salmon.

In this study, Atlantic salmon were fed diets rich in soybean oil (rich in omega-6) or flaxseed oil (rich in omega-3) for 12 weeks and then exposed to bacterial (formalin-killed Aeromonas salmonicida) or viral (polyriboinosinic-polyribocytidyl acid) antigens. The kidneys of salmon fed a diet rich in omega-3 showed a more anti-inflammatory fatty acid profile and a more contained induction of pro-inflammatory and neutrophil-related genes during immunological challenges. The omega-3-rich diet also promoted greater expression of genes associated with the interferon-mediated signaling pathway, potentially increasing antiviral immunity.

NCBI
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Method for managing fish productivity in land-based aquaculture using data prediction for each growth period

A computerized method for managing fish productivity in land-based aquaculture allows the use of data predictions for each growth period. This method includes the use of a processor to estimate both the amount of feed for an aquaculture tank based on sensor information and the growth of the fish based on the planned amount of feed.

Espacenet
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LIVING MARINE RESOURCES

Potential of ultrasound-assisted ethanolic extract of *Sargassum horneri* in inhibiting tyrosinase activity and melanin production in murine B16F10 melanocytes

This research studied the effect of ultrasound-assisted ethanolic extract (SUSE) of the brown algae *Sargassum horneri* (S. horneri) against melanogenesis in murine B16F10 melanocytes stimulated by melanocyte-stimulating hormone (MSH). The results suggest that SUSE has an anti-melanogenic effect and can be used as an ingredient in the formulation of cosmetics related to skin lightening and brightening.

NCBI
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Volatile organic compounds produced by a deep-sea bacterium effectively inhibit the growth of Pseudomonas aeruginosa PAO1

This study revealed that the deep-sea bacterium Spongiibacter nanhainus CSC3.9 has significant inhibitory effects on agricultural pathogenic fungi and human pathogenic bacteria, especially Pseudomonas aeruginosa, the notorious multi-resistant pathogen that affects the health of the general population. The results obtained demonstrated that the corresponding antibacterial agents against P. aeruginosa PAO1 are volatile organic compounds (VOCs, namely VOC-3.9).

NBCI
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Carboxymethylcellulose and anthocyanin-based films as a colorimetric visual indicator for shrimp freshness screening

This research showed that lipids extracted from Schizochytrium sp. (SEL) significantly promoted the proliferation and survival rate of dermal papilla cells (DPCs) under oxidative stress. Treatment with SEL showed the potential to protect DPCs against oxidative stress damage by reducing the level of reactive oxygen species (ROS). Specifically, SEL significantly inhibited the ferroptosis pathway and promoted the expression of antioxidant genes. In vivo application of SEL improved hair growth, suggesting that this may be a new therapeutic option for alopecia.

NBCI
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Lipids extracted from Schizochytrium sp. They prevent alopecia by increasing antioxidant action and inhibiting ferroptosis of dermal papilla cells.

This study aimed to evaluate the response efficiency of carboxymethylcellulose (CMC) films incorporating different natural anthocyanins isolated from *Karanda* (Clitoria ternatea) (CMC/AK), butterfly pea (Clitoria ternatea) isolated (CMC/AB), and a mixture of anthocyanins from *Karanda* and butterfly pea (CMC/AK75/AB25) to track shrimp freshness during different storage times and temperatures (4°C for 8 days and 25°C for 30 h). Mathematical models were also applied to predict freshness and expiration date. The CMC/AK75/AB25 indicator film was the most sensitive, registering a clear color change perceptible to the naked eye.

NBCI
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BIOMARINE TECHNOLOGY

Dinoflagellate Cellulose as a Versatile and Environmentally Friendly Platform for the Production of Functionalized Cellulose Nanofibers

This study explores the potential of dinoflagellate-derived cellulose fibers (CFs) as a sustainable and versatile source of cellulose nanofibers (CNFs). Cellulose extracted from dinoflagellates is effectively converted into CNFs via TEMPO-based oxidation in one step, without significant polymer degradation. Furthermore, the biocompatibility of the CNFs was improved with amine grafting using putrescine and folic acid. The products were characterized and, in a proof-of-concept study, the application of functionalized CNFs was tested in drug delivery using methylene blue as a model drug.

NCBI
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Sustainable and optimized production of fish protein hydrolysates from discarded tuna and hake canning waste: Effect of protein molecular weight on chemical and bioactive properties

This work focused on the mathematical optimization of the production of fish protein hydrolysates (FPH) from hake and tuna waste, in terms of controlling the average molecular weights (Mw) of the proteins. A pseudo-mechanistic model was used to model the protein depolymerization time. The results prove that the proposed procedure for producing sustainable FPH, with specific Mw characteristics, can be expanded to other fish waste substrates. FPH may have the potential to serve as valuable ingredients for functional foods and high-quality aquaculture feeds.

NCBI
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