Application-specific product formulations require that the organisms are kept in a state capable of multiplying from the time of their production through storage to transport to the place of release. Fluidized bed and spouted bed processes offer a very high potential for different heat and mass transfer processes due to their unique fluid mechanical and thermodynamic properties. The drying and stabilization of microorganisms for food and nutraceuticals is one of many examples that illustrate the close interplay between formulation, process engineering and plant engineering.