1
Q
Isolate on
A
Blood Agar
MacConkey
Bile aesculin
Chromogenic agar
2
Q
MacConkey
A
Selective- High bile salts
Differential- Lactose
Pink for lactose fermenting
3
Q
Bile aesculin
A
Selective= bile salts
Differential= Aesculin
Organism ferments dextrose and breaks down aesculin to aesculitin. Aesculitin combines ferric ions to produce a black complex
4
Q
Confirmatory Tests
A
Lancefield
Bile Aesculin
Maldi tof
Vitek
