Effect of Modification on Functional, Thermal, and Structural Properties of Protein

Proteins are essential components in food systems, contributing to texture, stability, and overall functionality. Their structural, functional, and thermal properties can be significantly altered through physical, chemical, and enzymatic modifications. These treatments help tailor proteins to meet specific food processing and consumer needs. Physical modifications typically affect the molecular arrangement without changing the chemical composition, influencing solubility, foaming, emulsification, and gelation behavior. Chemical modifications, on the other hand, introduce new functional groups to the protein structure, altering charge and polarity and thereby improving or reducing functional traits like emulsification or water-holding capacity. Enzymatic modifications rely on specific enzymes to hydrolyze or cross-link proteins, resulting in changes in molecular weight, conformation, and interaction potential. These changes can enhance desirable characteristics such as solubility and foaming, while sometimes reducing gelation ability. A better understanding of how these treatments affect protein behavior helps in creating food products with improved texture, longer shelf life, and better taste while also balancing processing efficiency, functionality, and consumer satisfaction.