Derivatives of Structural Proteins

This chapter explores the realms of marine proteins, focusing particularly on marine structural proteins and their derivatives. A thorough examination of different extraction methods for obtaining collagen, gelatin, and enzymes is provided, offering detailed insights into the production processes. Additionally, the discussion extends to protein derivatives sourced from secondary raw materials, such as fish protein hydrolysates and collagen peptide/gelatin hydrolysates. Techniques for production, isolation, and characterization from fish skin, bones, and scales are meticulously explored. Furthermore, alternative methods of collagen extraction, including acid extraction procedure, deep eutectic solvent (DES) extraction, Supercritical fluid extraction (SFE), extrusion, and ultrasound-assisted extraction, are elaborated upon, highlighting their efficacy and applicability. The chapter also comprehensively covers collagen characterization methods, focusing on aspects such as the determination of chemical composition, purity, and secondary structure. Moreover, the discourse extends to gelatin extraction methods and the diverse functions of protein derivatives, providing a holistic understanding of their utilization and potential applications within the marine protein industry.