Although addition of GOS and inulin was not significantly (p > 0.05) influenced to the survival of microencapsulated cells, GOS seemed to be slightly more effective than inulin due to the lowest log reduction was obtained from 1.5% GOS as 3.1 and 2.9 for L. acidophilus and L. casei, respectively, which was approximately 1000 times of the control (without prebiotics).