Screening of whey protein isolate hydrolysates for their dual functionality: Influence of heat pre-treatment and enzyme specificity

► Enzyme type and heat pre-treatment affected hydrolysate biological functionality. ► Hydrolysates had both antioxidant activity and ACE inhibition activity. ► WPI hydrolysates had reduced surface hydrophobicity compared to unhydrolysed WPI. ► Hydrolysates demonstrated potential as dual functional ingredients.