Some scholars have processed these species into restructured products using new technologies (Ramírez et al. 2007; Oduor-Odote and Kazungu 2008). Enzymatic hydrolysis and modification by trace metals is the most feasible and effective technology to recover value-added proteins from low-value fish without losing their nutritional value.
In the present study, enzymatic hydrolysis and ferrous chelation were employed to produce active ferrous-chelating peptides from five types of low-value fish. The antioxidant activities of ferrouschelating peptides were investigated to verify whether they can be used as functional food materials.