In the microencapsulation of bacterial cells, the selection of
spray drying conditions involved a compromise between the
desired moisture content and cell survival. If a high survival of cells
resulted from spray drying, along with high moisture contents, it is
expected that cell viability would be lost during storage.
Accordingly, three different inlet temperatures ranging from 90 to 130 C, along with two different flow rates of 6.6 and 9.0 ml/min were chosen in the experimental design using WPI at 10% (w/w) as a spray drying encapsulant.