*1.12.3 Role of glucose for improving probiotic stability*

Some probiotic bacteria have a significant pH susceptibility below 3. It is stated that glucose has been included into the growing medium for improving probiotic stability. Corcoran and others observed glucose improving *L. rhamnosus* GG's survival at a pH lower than 3. The addition of GL (1 to 19.4 mM) improved *L. rhamnosus* GG survival in artificial gastric juice from 6.4 to 8 log10 CFU/ml [44]. Therapeutic adaptation of the acid stress was also described as ways to improve Bifidobacterium species stress tolerance and biological characteristics [45].
