Fabrication and characterization of walnut peptides-loaded proliposomes with three lyoprotectants: Environmental stabilities and antioxidant/antibacterial activities

•Lyoprotectants maintained a favorable liposomal spherical shape during lyophilization.•Walnut peptides-loaded proliposomes showed favorable bioactivities.•Walnut peptides formed hydrogen bond with either lyoprotectants or phospholipids.•Lyoprotectants altered the free fatty acid release behaviors in simulated digestion.