found that the storage
without the formation of microcapsules had no viability after 8 w
of storage at 30 C, while the survival rate of those using silica
gel capsules reached 90% by spray drying for the microencapsulation
of Beauveria brongniartii conidia. In conclusion, microencapsulation
of biological products using spray drying can significantly
elevate the stability of thallus. In this study, the survival of B. subtilis
B99-2 in microcapsules after 540 d of storage at room temperature
was significantly higher than that in wettable powder.