B2E Technological Sonar Initiative #32
June marks the beginning of a new journey of discoveries in diverse scientific fields. From omega-3 enriched diets boosting Atlantic salmon’s antiviral defenses to Sargassum horneri extracts revolutionizing skincare, and sustainable cellulose nanofibers promising eco-friendly solutions, innovation is thriving. Dive into the latest on shrimp freshness indicators, deep ocean water yeast fermentation, anti-alopecia breakthroughs, and optimized fish protein hydrolysates. Explore these cutting-edge studies and be inspired!
AQUACULTURE
Vegetable omega-3 and omega-6 fatty acids differentially modulate the antiviral and antibacterial immune responses of Atlantic salmon
In this study Atlantic salmon were fed aquafeeds rich in soy oil (high in omega-6) or linseed oil (high in omega-3) for 12 weeks and then challenged with bacterial (formalin-killed Aeromonas salmonicida) or viral-like (polyriboinosinic polyribocytidylic acid) antigens. The head kidneys of salmon fed high dietary omega-3 levels exhibited a more anti-inflammatory fatty acid profile and a restrained induction of pro-inflammatory and neutrophil-related genes during the immune challenges. The high-omega-3 diet also promoted a higher expression of genes associated with the interferon-mediated signaling pathway, potentially enhancing antiviral immunity.
NCBI
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Method of managing productivity of fish in land-based aquafarm through data prediction for each growth period
A computer-based method for managing fish productivity in a land-based aquafarm involves using data predictions for each growth period. This method includes using a processor to predict the feed amount for an aquaculture tank based on sensor data. It also predicts fish growth based on the predicted feed amount.
Espacenet
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LIVING MARINE RESOURCES
Unveiling the Potential of Ultrasonic-Assisted Ethanol Extract from Sargassum horneri in Inhibiting Tyrosinase Activity and Melanin Production in B16F10 Murine Melanocytes
The present study investigated the effect of ultrasonic-assisted ethanol extract (SHUE) from Sargassum horneri (S. horneri), brown seaweed against melanogenesis in α-melanocyte-stimulating hormone (MSH)-stimulated B16F10 murine melanocytes. The results suggest that SHUE has an anti-melanogenic effect and can be used as a material in the formulation of cosmetics-related to whitening and lightening.
NCBI
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Volatile Organic Compounds Produced by a Deep-Sea Bacterium Efficiently Inhibit the Growth of Pseudomonas aeruginosa PAO1
This study showed 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 multidrug-resistant pathogen affecting human public health. The results demonstrated that the corresponding antibacterial agents against P. aeruginosa PAO1 are volatile organic compounds (VOCs, namely VOC-3.9).
NBCI
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Colorimetric indicator films based on carboxymethyl cellulose and anthocyanins as a visual indicator for shrimp freshness tracking
This study aimed to evaluate the response efficiency of colorimetric indicator films based on carboxymethyl cellulose (CMC) incorporated with different anthocyanins [Karanda alone (CMC/AK), butterfly pea alone (CMC/AB), and a mixture of anthocyanins from Karanda and butterfly pea (CMC/AK75/AB25)] for tracking shrimp freshness during storage at different temperatures and times (4 °C for 8 days and 25 °C for 30 h). The mathematical models were also applied to predict their freshness and shelf life. The CMC/AK75/AB25 indicator film was the most sensitive and clearly changed color, which the naked eye could distinguish.
NCBI
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Schizochytrium sp. Extracted Lipids Prevent Alopecia by Enhancing Antioxidation and Inhibiting Ferroptosis of Dermal Papilla Cells
This research showed that Schizochytrium sp.-extracted lipids (SEL) significantly promoted proliferation (up to 1.13 times) and survival ratio of Dermal papilla cells (DPCs) under oxidative stress. The treatment with SEL can protect DPCs against oxidative stress damage, reducing the reactive oxygen species (ROS) level. Specifically, SEL significantly inhibited the ferroptosis pathway and promoted the expression of antioxidant genes. The in vivo application of SEL improved hair growth. This study proposes a novel therapeutic option for alopecia.
NCBI
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MARINE BIOTECHNOLOGY
Cellulose from dinoflagellates as a versatile and environmentally friendly platform for the production of functionalised cellulose nanofibers
This study explores the potential of dinoflagellate-derived cellulose fibers (CFs) as a sustainable and versatile cellulose nanofibers (CNF) source. Extracted dinoflagellate cellulose is converted into CNFs via one-step TEMPO oxidation without significant polymer degradation. In addition, the biological compatibility of the CNFs is improved by amine-grafting using putrescine and folic acid. The products were characterized and in a proof-of-principle study, the application of the functionalized CNFs in drug delivery was tested using methylene blue as a drug model.
NCBI
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Optimal and sustainable production of tailored fish protein hydrolysates from tuna canning wastes and discarded blue whiting: Effect of protein molecular weight on chemical and bioactive properties
This work focused on the mathematical optimization of the production of tailored fish protein hydrolysates (FPH), from blue whiting and tuna residues, to control average molecular weights (Mw) of proteins. A pseudo-mechanistic model was used to model the protein depolymerization time-course. The results prove that the proposed procedure to produce sustainable FPH, with specific Mw characteristics, could be extended to other fish waste substrates. Tailored FPH may potentially serve as valuable ingredients for functional foods and high-quality aquaculture feed.
NCBI
