Violet Red Bile Glucose Agar (VRBGA)

Violet Red Bile Glucose Agar (VRBGA) is a selective and differential agar medium commonly used in microbiology to isolate and differentiate bacteria based on their ability to ferment glucose. The violet red bile salts inhibit the growth of Gram-positive bacteria, allowing for the selective growth of Gram-negative bacteria that ferment glucose. This medium is particularly useful in the detection and enumeration of coliform bacteria in food and water samples.