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 typical of lipids: a very intense CHx peak (C1 + C2), accompanied