Abstract
This book chapter discusses emerging technologies, including pulsed electric fields (PEFs), subcritical water hydrolysis (SWH), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), compared to traditional methods, such as alkali hydrolysis, acid hydrolysis, and enzymatic hydrolysis. The focus is on their application and efficacy in the production of fish protein hydrolysate (FPH). The nonthermal PEF and UAE technologies are not widely used in FPH production. MAE has a promising potential to enhance the quality of protein hydrolysates, with notable impacts on antioxidant activity and functional properties. A detailed discussion of equipment, methodologies, advantages, and disadvantages of each technology is provided, offering insights into their potential for sustainable and efficient FPH production.