Discover the latest innovations in the world of Aquaculture and Living Marine Resources! From salmon feeding to sexual maturation in aquatic animals, delve into the latest developments in the B2E CoLAB Technological Sonar. This edition presents revolutionary advances, from reproduction prediction systems to cellulose extraction from algae for membrane synthesis. Explore marine biotechnology with studies on trout flesh pigmentation and marine compounds as potential anti-cancer drugs.

AQUACULTURE

Aller Aqua tests grass protein in salmon feed

Aller Aqua Norway has received NOK 10 million (US$968,000) from the Research Council of Norway to develop nutritional solutions for fish based on new raw materials. The financial support will be used to test grass protein as a feed mix for salmon. Aller Aqua’s goal is to confirm that the protein extracted from Norwegian meadow plants provides at least the same performance, fish welfare, and product quality as soybean meal.

Aquafeed
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Aquaculture Reproduction Prediction System

The invention provides a reproduction prediction system in aquaculture. The aquaculture and prediction system is divided into two sections: monitoring the process during the reproduction of aquatic species and a prediction mechanism that can provide results for the next reproduction cycle.

Espacenet
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Promotion of Synchronous Sexual Maturation and Spawning in Aquatic Animals

This document presents a method for promoting sexual maturity in a collection of aquatic animals, including feeding the animals with recombinant algae that express a gonadotropin-releasing hormone that promotes sexual maturity. The invention also comprises recombinant algae designed to express a gonadotropin-releasing hormone.

Espacenet
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LIVING MARINE RESOURCES

Cellulose extraction from the algae Ulva lactuca and its use for membrane synthesis

Green algae are a sustainable source of biopolymers, with high global demand due to their high photosynthetic efficiency. This study describes the extraction of cellulose from plant systems represented by the species Ulva lactuca. To extract various substances, the algae were finely ground with the aid of solvents (liquid media). This was done to obtain the necessary conditions to help reduce the resistance that this phase presents in relation to the transport and transfer of the species to be extracted. With the cellulose extracted from the algae, membranes were obtained that were subjected to a swelling process in liquid medium (ethyl alcohol) at different concentrations.

NCBI
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Potential of Saccharina latissima flour as a functional ingredient in the baking sector

The healthy “superfood” sector is currently developing rapidly in Europe, and supermarkets are increasingly stocking macroalgae-based food supplements. Adding Saccharina latissima flour to standard baking recipes provides high amounts of minerals such as K, Fe, Ca, P, and I, as well as a significant amount of fiber, thus improving the nutritional quality and porosity of the bread crumb matrix made with wheat flour. The results obtained in this study demonstrate the potential of using S. latissima flour in proportions of up to 3% as a functional ingredient in the production of baked goods with high nutritional value.

NCBI
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MARINE BIOTECHNOLOGY

Pigmentation of rainbow trout (Oncorhynchus mykiss) flesh improved by feeding with naturally occurring Z-isomer-rich astaxanthin

This study investigated the effects of feeding a diet containing E- or Z-isomer-rich astaxanthin derived from Paracoccus carotinifaciens on the pigmentation and concentration of astaxanthin in rainbow trout (Oncorhynchus mykiss) flesh. Z-isomer-rich astaxanthin was prepared from the E-isomer, derived from P. carotinifaciens, by heat treatment in fish oil.

NCBI
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Marine-derived compounds as potential Hsp90 inhibitors for the development of anticancer and antimicrobial drugs: A comprehensive in silico study

This study aimed to identify novel inhibitors of the Hsp90 protein (heat shock protein 90) from a diverse collection of marine-derived compounds. Five compounds were successfully identified, notable not only for their structural diversity, encompassing stilbenes, indoles, pyrroloindoles, and phenylbenzofurans, but also for their marine origins, ranging from sponges (Demospongiea) and Didemnum granulatum to tunicates Rhopalaea sp., Spongosorites sp., Zyzzya fuliginosa, and Penicillium chermesinum. Notably, despite their structural variations…

From marine sources, all these compounds exhibited highly promising interactions with the Hsp90 protein, forming multiple hydrogen bonds that significantly increase their stability. The safety of these compounds was ensured through an in silico ADMETOX analysis.

NCBI
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Novel Dienelactone Hydrolase from Microalgal Bacterial Community – Antibiotic Activity Against Fish Pathogens and Potential Applications for Aquaculture

Biofilms are resistant to many conventional antibiotics, therefore, to harness the potential of marine microbial resources, omics metadata of microalgae-bacteria communities were analyzed in search of potential antimicrobial and quorum quenching enzymes. In particular, this study focused on the impact and characterization of a novel dienelactone hydrolase, one of the most promising candidates, which demonstrated a high inhibitory effect on the development of biofilms of fish pathogens, e.g., E. anguillarum. The results show that Dlh3 affects the initial binding, essential for biofilm formation, and that E. anguillarum responds by positively regulating several defense mechanisms, for example, membrane and transport systems.

NCBI
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