Influência do sistema de cultivo de diferentes regiões brasileiras nas características sensoriais de filés de garoupa-verdadeira (Epinephelus marginatus)

Abstract

Groupers are fish with great economic potential, excellent nutritional values and much appreciated in gastronomy. With the low availability in nature, caused mainly by unregulated capture over the years, the species was placed on the red list of the “International Union for Conservation of Nature” (IUCN) as a species at serious risk of extinction, which led to several programs for recovery, using cultivation methods adapted to the species, were developed and put into practice. Among the main cultivation methods are the Continuous Flow System (SFC), the cultivation in Net Tank at Sea (TRM), and the cultivation in Excavated Nurseries (VE). The present work evaluated, through the conclusions of a focus group, if animals raised in the three systems, in three different regions of Brazil, each one with its peculiarities, and different feeding regimes, presented sensorial differences between them. The work was divided into two stages, in the first, the participants of the focus group analyzed in natura samples of animals from each breeding system, without the use of taste, the participants were instructed to evaluate the Appearance, apparent texture, and aroma of the samples, and concluded that it was not possible to identify differences between them caused by the cultivation method. In the second stage the participants analyzed roasted samples, and were allowed to taste the samples, the samples were presented to the participants so that each participant received 3 samples, two of them from the same region and the other from a different region, the participants were oriented to descriptively point out the sensory attributes perceived by Taste, Aroma, Texture and Appearance, in addition to inferring scores for each sample based on a hedonic scale, these scores were later used to detect the Acceptability Index (AI) of each sample. It was concluded that there was a perception of differences between the samples from each region with their respective culture medium and different diets.