Fabrication of WPI-EGCG covalent conjugates/gellan gum double network emulsion gels by duo-induction of GDL and CaCl2 for colon-controlled Lactobacillus Plantarum delivery

•WPI-EGCG covalent conjugates/gellangum double network emulsion gel was fabricated.•The emulsion gel was fabricated by duo-induction of glucono-δ-lactone and CaCl2.•First gellan gum gels integrated into the GDL-induced second gel networks with role.•Double network emulsion gels as colon-controlled delivery carrier for probiotics.