Comparative analysis of the output products of pollock and the main commercial cod fish species

Abstract

The purpose of this study is to identify general trends affecting changes in the values of the output of products from pollock and other commercial species of cod fish, and also includes a comparative analysis of the nutritional value of products from pollock and cod to provide objective recommendations to consumers of fish products.Methods used: To conduct a comparative analysis, data on the output of frozen products, reference materials and publications on the characteristics of growth, puberty, seasonal changes in biological parameters, fatness coefficient for walleye pollock, northeastern arctic and Baltic cod, Pacific cod were used. In accordance with the “Methodology for determining the consumption rates of raw materials in the production of products from aquatic organisms”, in order to compare the data, the coefficients of consumption of raw materials for the production of products were recalculated.Novelty: a comparative analysis of the change in the values of the output of products from pollock and the main commercial species of cod fish was carried out for various types of cutting in conjunction with the annual dynamics of biological parameters.Result: the general trends of changes in the output of pollock, northeastern arctic, Baltic and Pacific cod were determined. Based on the results of a comparative analysis of the nutritional value of products from pollock and cod, recommendations are presented to consumers of fish products.Practical significance: it has been established that inter-s easonal changes in the output of walleye pollock products average 0,5 %, and the output of Pacific cod changes by 5,4–5,5 %, in northeastern arctic cod the difference in output by season can reach up to 5,7 %, in Baltic cod up to 4,5 %. Cod is more depleted in the pre-spawning period, unlike pollock, so pollock processing is more rational.