The surface composition of WPI-P-GA microcapsules was similar to that of WPI–GA (control) produced by both drying methods. It indicates that the bacterial cells were embedded within the complex coacervates and were not exposed to the surface. In the case of oil containing microcapsules, the XPS data clearly show that the surface of these microcapsules was coated with the oil. The C 1s spectra of all the oil containing microcapsules are almost identical showing shapes and peaks typicaloflipids:averyintenseCH x peak(C1 + C2),accompanied