Abstract
With the increase in global life expectancy, the research on the specific digestive patterns of the elderly is becoming highly essential. We simulated the digestion process of older individuals in vitro and investigated the effects of various high hydrostatic pressure (HHP) treatments on the protein structure, digestibility, and antioxidant activity of whey protein isolate (WPI), as well as the antioxidant peptides produced from its digest. The HHP treatment specifically affected on the secondary and tertiary protein structures along with the free sulfhydryl content of WPI. Protein microstructure revealed a significant increase in the number and depth of pores. Highest in vitro digestibility and cellular antioxidant activity was observed after HHP treatment at 600 MPa for 30 min. In the intestinal digest, 15 antioxidant peptides were identified whose characteristics matched those of bioactive peptides. Of these, the LGSDMEDLR peptide sequence had the highest "-CDOCKER Energy” and formed the salt bridge, attractive charge, conventional hydrogen bond, carbon hydrogen bond, and van der Waals with Arg380, Arg415, Arg483, Tyr334 and Asn382, which all located in the binding site of the Keap1-Nrf2 interaction. Overall, HHP appeared to be a potential method for the application of dairy products among the elderly.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
