What are “Bile-tolerant Gram-negative bacteria”?

FAQ: USP <62>—Microbial Enumeration of Nonsterile Products: Tests for Specified Microorganismssalmonella iStock_000005884188XSmall

There is no strict definition of this group of microorganisms. Bile-tolerant gram negative bacteria are defined operationally as those microorganisms that show growth in the stated conditions on Violet Red Bile Glucose Agar medium. They include , Gram negative bacteria that grow in the presence of bile salts , non-lactose fermenting but able to utilize glucose. Examples of some Bile tolerant Gram negative bacteria includes members of the family Enterobacteriaceae, Pseudomonads and Aeromonas.

 
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