Dispersible Biopolymer Particles Loaded with Lactase as a Potential Delivery System To Control Lactose Hydrolysis in Milk

To deliver lactase in milk, dispersible capsules were fabricated by anti-solvent precipitation of zein to form a zein–lactase core and a shell of low-methoxyl sugar beet pectin cross-linked by Ca2+, involving electrostatic, hydrophobic, hydrogen-bonding, and Ca2+-bridging forces. At optimal conditions, an encapsulation efficiency of 93.0% and Z-average diameter of 652.7 nm were observed, and spherical particles smaller than 200 nm were observed...