MacConkey Agar is used to isolate gram-negative organisms that ferment lactose, indicated by a pink-red color change due to pH decrease; bile salts inhibit gram-positive growth, making growth on CSF MacConkey's indicative of a CNS infection with enteric bacteria.
MakConkey Agar, laktozu fermente eden ve pH düşüşüyle pembe-kırmızı renge dönen gram-negatif organizmaların izolasyonu için kullanılır. Safra tuzlarının varlığı gram-pozitif organizmaların büyümesini engeller, bu nedenle bu agarda üreme, özellikle BOS kültüründe CNS enfeksiyonunu düşündürür.
| Front | MacConkey Agar What is it used for? How does it work? |
|---|---|
| Back | ↓ Ferments lactose on MacConkey agar ↓ Decreased ↓pH causes color change (pink-red) Bile salts present in MacConkey agar prevent the growth of gram (+) organisms so growth on CSF MacConkey' culture implies a CNS infection with enteric bacteria (E.coli) |
Tags: microbiology
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