OBTENÇÃO E CARACTERIZAÇÃO FÍSICO-QUÍMICA E NUTRICIONAL DE CONCENTRADO PROTEICO DE RESÍDUOS DE FILETAGEM DE SARAMUNETE (Pseudupeneus maculatus - BLOCH, 1793)

Obtaining and physicochemical and nutritional characterization of protein concentrate from fillet residues of saramunete, Pseudupeneus maculatus (Bloch, 1793)

Abstract

The aim of the present study was to obtain and characterize the protein concentrate of saramunete filleting waste, Pseudupeneus maculatus. Two types of protein concentrates (CPS) were developed, type A and type B, and yield, pH, water activity, color, volatile nitrogenous bases, moisture, protein, fat and ashes were evaluated. Type A CPS showed lower yield, despite being more acidic (lower pH) and lighter in color (higher L* value), less red (lower a* value) and more yellow (higher b* value) than o CPS type B. The water activity, percentage of moiture and volatile nitrogenous bases of the CPS were low and there was no difference between treatments. Type A CPS showed a higher percentage of protein and less ash, indicating better protein quality. In addition, it presented a lower amount of lipids, possibly being less susceptible to lipid oxidation. Therefore, CPS type A is a good way to add value to the waste of saramunete because the product has a good yield, adequate physical and chemical characteristics and nutritional aspects compatible with other protein concentrates of fish.