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Selective and Differential media - Coggle Diagram
Selective and Differential media
MSA (mannitol and salt)
Sodium chloride
selectivity
only staphyloccoci survives
gram positive grow
Mannitol
differencial
bacteria that can ferment mannitol
staphylococcus aureus
Phenol red (indicator)
yellow acidic
red neutral
Selective: allows certain types of organisms to grow and inhibit the growth of others
Differential: visually distinguish one group bacteria (metabolic features)
MAC (Mac Conkey)
detect coliforms (E.coli)
Bile salt, Crystal violet
selectivity
gram negative grow
Lactose
differential
fermenters (pink)
non fermenters (colorless)
Neutral red dye
ph indicator
acidic
neutral (red)
EMB (Eosin, methylene blue)
Enterobacteriaceae (E. coli)
Methylene blue and Eosin
Selective
gram negative grow
Lactose
differential
fermenters (dark sheen)
slow fermenters
non fermenters