Chemical composition and yield of piramutaba (Brachyplastystoma vaillantii, Valenciennes, 1840)

Abstract

The piramutaba is specie processed and sold in the refrigerated frozen fillet. The present study was conducted to determine in the industry the yield and chemical composition of the fillet and the residue. About 20 samples were collected for the determination of the chemical composition of the fillet and the residue, average weight 1093,50 g. The yield data were calculated on the production line of industry fish, samples from 15 lots of the production line. The results show that the average yields were 33.3% for fillet without skin, 23.30% head and 43.34% for residue. The analysis of the chemical composition on fillet indicated 78.03% moisture, 15.72% protein, 5.83% lipid and 0.74% ash. Already residue was observed 70.33% moisture, 14.32% protein, 10.76% lipid, 1.54% ash. Based on the data obtained it can be concluded that the species is a piramutaba with both high fat content in the fillet, especially in the waste, and yield was within the range normally encountered in fish.