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Dear Readers, Welcome to the latest issue of Micro
VRBL Agar, full name Violet Red Bile Lactose Agar, is a selective and difference medium commonly used in microbiology. It’s especially useful when it comes to identifying coliform bacteria like E. coli and Enterobacter aerogenes.
This agar is selective because of inhibitors that suppress the growth of certain bacteria we don’t care about.
Differential media needs indicators to distinguish one type of bacteria from another based on their ability to ferment lactose and produce acid.
This agar was made specifically for finding coliform bacteria which can indicate fecal contamination in things like water, food, and other environmental samples.
Testing water quality gives us a way to gauge how healthy it is to drink or swim in since there’s also those recreational areas.
Different parts of the environment can be infected with coliforms showing where pollution comes from. This helps people handling these areas assess the safety of them too like swimming pools and beaches.
Although its main use is in food and environmental testing, it can also be used in clinical microbiology to isolate and find coliform bacteria when necessary. Overall, this agar is extremely valuable. It helps us isolate specific bacteria for a variety of situations ranging from quality and safety tests to checking levels of contamination.