Comparative Analysis of Nutritional and Biotechnological Value of Muscle Tissue of Mesopelagic Fishes of the North-East Atlantic Region

A comparative analysis of some nutritional and biotechnological characteristics of muscle tissue of the most widespread and abundant mesopelagic fish species inhabiting the Irminger Sea (North Atlantic) was carried out. At the level of lipid metabolism, potential nutritional value was established for non-commercial and along with the commercial beaked redfish For and, partially, , possible biotechnological value was shown in terms of extracting individual valuable molecules and substances of lipid nature. The other studied species (), as well as , are very promising for their use in aquaculture in the development of innovative feed compositions and additives for them. It was found that the depth and area of catch don’t have a significant effect on the nutritional and biotechnological characteristics of the muscle tissue of the studied species. The exception is , the characteristics under consideration of which vary depending on the area of catch, and for and - on the depth of catch. The results of the study can serve as a basis for the development and improvement of methods and protocols for the rational use of deep-sea biological resources in the process of their development in the North Atlantic region, and also determine the areas of practical application of these species and the type of products obtained from them or with their use (feed, additive, pure substance, composition, functional food product, etc.).