Fish frame waste (FW) from threadfin breams ( Nemipterus japonicus ) was valorized into functional fish protein hydrolysates (FPH) using proteases from plant (ficin), microbial (neutrase), fungal and endogenous visceral sources for potential food and nutraceutical applications. A comparative enzymatic hydrolysis approach was adopted for evaluating influence of enzyme source and degree of hydrolysis (DH) on bioactivity and func...