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Can a litmus milk culture show a pink band at the top and a brownish translucent layer at the bottom Explain?
Wiki User
∙ 12y ago
No, the pink means that the organism can ferment lactose, so the medium is acidic that why the top is pink. But the brown means the the organism can't ferment lactose and it hydrolyzed protein to amino acids. This is contradictory it's either the whole this is completely pink (lactose fermentation) or the medium is pink at top and rest is white (lactose and acid) or the top is purple and the rest of medium is brown (proteolysis/peptonization)= no lactic acid fermentation, so breaks down proteins to amino acids.
Wiki User
∙ 12y ago
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