Ultrasound combined with pH-shifting improved the emulsification and stability of coconut meal protein isolate by modifying physicochemical properties and intermolecular forces.

ABSTRACT: This study investigated the effects of ultrasound combined with acidic/alkaline pH-shifting (U-C/U-K) and acidic/alkaline pH-shifting combined with ultrasound (C-U/K-U) on the physicochemical properties and emulsification performance of Coconut Meal Protein Isolate (CMPI). The results demonstrated that these modification treatments reduced the particle size and polydispersity index of CMPI, increased its net charge, and improved its solubility, except in the group subjected to the ultrasound followed by acid pH-shifting (U-C). These modifications also promoted the conversion of disulfide bonds into free sulfhydryl groups. Among the various molecular interactions, hydrogen bonding and hydrophobic interactions played a more significant role in the formation of CMPI particles than electrostat

SUBMITTER: Guo J 

PROVIDER: S-EPMC12271623 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature