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Hi, I am uploading the pictures of my PEA plate and MAC plates, Mac shows pink fermentation for side B and PEA shows some growth on SIDE B. Please

Hi, I am uploading the pictures of my PEA plate and MAC plates,

Mac shows pink fermentation for side B and PEA shows some growth on SIDE B.

Please clear my confusion ? If Side B on MAC shows pink color means it is gram negative lactose fermenter, while growth on SIDE B of PEA will be showing Gram +Ve organism, SO how is that possible, as results of Side B on MAC and SIde B on PEA contradict each other.

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Top Answer

1) MAC (MacConkey Agar) is selective as well as differential media . it selects Gram negative bacteria and inhibit the growth... View the full answer

2 comments
  • But PEA shows growth on SIde B ?
    • palkesh
    • Nov 02, 2018 at 9:51am
  • Thanks
    • palkesh
    • Nov 02, 2018 at 10:00am

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