-fermenting bacteria, which are generally enteric bacteria, such as Escherichia coli, Klebsiella, and Enterobacter acidify the medium, and the colonies appear black with a greenish sheen. Colonies which do not ferment lactose, such as Salmonella, Shigella, and Pseudomonas appear translucent or pink.
Vogel-Johnson agar can be used to selectively grow coagulase-positive, mannitol-positive Staphylococcus aureus from clinical specimens and foods (Biol, 2004). Triple sugar iron agar is a differential medi
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