What are the Bile-Tolerant Gram-negative bacteria ?

• There is no strict definition of this group of micro-organisms. They are defined operationally as those micro-organisms  that show growth in the stated conditions on violet red bile glucose agar (VRBGA) medium.

• They include, gram negative bacteria that grow in the presence of bile salts, non-lactose fermenting but also to utilize glucose.

Example :

• Some bile tolerant gram negative bacteria includes members of the family Enterobacteriaceae, Pseudomonas and Aeromonas.