Improved encapsulation effect and structural properties of whey protein isolate by dielectric barrier discharge cold plasma

Int J Biol Macromol. 2023 Dec 5:128556. doi: 10.1016/j.ijbiomac.2023.128556. Online ahead of print.ABSTRACTThe whey protein isolate (WPI) was modified by dielectric barrier discharge cold plasma (DBD) in order to improve its encapsulation efficiency of rutin. In this work, the effect of DBD treatment on structure and physicochemical properties of WPI and the interaction between DBD-treated WPI and rutin were investigated. The results showed that the structural change of WPI leaded to the exposure of internal hydrophobic groups, increasing the interaction site with rutin. The embedding rate of DBD-treated WPI (30 kV, 30 s) on rutin was improved by 12.42 % compared with control group. The results of multispectral analysis showed that static quenching occurred in the process of interaction between DBD-treated and rutin, hydrogen bond and van der Waals force were the main forces between them. Therefore, DBD treatment can be used as a method to improve the embedding effect of WPI on hydrophobic active substances.PMID:38061529 | DOI:10.1016/j.ijbiomac.2023.128556
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Source Type: research