Caracterização tecnológica e perfil de ácidos graxos em arraias de água doce

Abstract

The fish as food is a major source of high-quality protein, with a balance of essential amino acids, and the quality of lipids, great source of polyunsaturated fatty acids. Over the years the fish has been the principal source of nutrients of animal origin in the Amazon and exploitation of fishery resources in a rational way is one of the major challenges to the industry, regional beneficiary eligibility of fish. The freshwater stingrays of gender Potamotrygon and Paratrygon come in over the past five years by participating systematically landing fishing in the Amazon region, so much so that currently fishing fleets are especially equipped to perform the capture of stingrays. However, all this effort is being applied without information on the technological characteristics of the species, which could subsidize decisions on methods and processes. Therefore, the purpose of this study was to characterize technology and the profile of fatty acids of the species Paratrygon aiereba and Potamotrygon motoro aiming to contribute to a better utilization of industrial species and subsidize the formulation of diets. The two copies of freshwater stingrays had a good income meat of pectoral fin, with 35.12% for P. aiereba and 32.35% P. motoro. Data from proximate composition were close to those established for other species of fish, featuring the two species of stingrays as leanness (<1% fat). The profile of fatty acids indicated as the majority arachidonic acid (20: 4n-6) and palmitic (16: 0). The indices of arachidonic acid obtained in the two species was respectively 29.16% in individuals of P. Motoro collected in the period of flooding in the lake of Moreno Maia and 21.17% in individuals of P. Aiereba collected in the period of drought in the Purus river.