Coliform Essay Topics

Appearance of colonies microorganism

VRBA |Appearance of Colonies |Microorganisms | |Red, surrounded by reddish precipitation zones, diameter1- 2 mm |Lactose-positive Enterobacteriaceae: coliform bacteria, E. coli | |Pink, pin-point colonies |Enterococci, possibly Klebsiella | |Colorless |Lactose-negative Enterobacteriaceae | CCA E. coli: dark-blue to violet colonies (Salmon-GAL and X-glucuronide reaction). Total coliforms: salmon to red colonies (Salmon-GAL reaction) and dark-blue to… View Article