regarding chromogenic media why there’s some different organisms give the same color when cultured on it ? For example in my studied media klebsiella give green color while Acinetobacter give white color in my study klebsiella give white color like Acinetobacter ??
Cultural Characteristics of Klebsiella oxytoca
Klebsiella oxytoca on Nutrient Agar
Circular, dome-shaped, mucoid, translucent or opaque, yellow to cream-colored colonies; 2-3 mm diameter.
Klebsiella oxytoca on Blood Agar
Circular, dome-shaped, mucoid, translucent or opaque greyish white colonies; 2-3 mm diameter; γ- hemolysis (no hemolysis).
Klebsiella oxytoca on Mac-Conkey Agar
Circular, convex, mucoid, pink to red-colored opaque colonies; 2-3 mm in diameter.
Klebsiella oxytoca on Violet Red Bile Agar (VRBA)
Large, mucous, and golden- or dull-yellow colored colonies.
Klebsiella oxytoca on XLD Agar
Yellow, surrounded by yellow zones, opaque, mucoid with precipitation zones.
Klebsiella oxytoca on Salmonella Shigella (SS)
Pink or red to cream-colored, mucoid, opaque colonies.
Klebsiella oxytoca on EMB agar
Circular, dome-shaped, mucoid, pink to purple colored translucent or opaque colonies; 2-3 mm in diameter.
Klebsiella oxytoca on Bile Esculin Agar
Growth with blackening of the medium within 4 hr.
Cultural Characteristics of Klebsiella pneumoniae
Klebsiella pneumoniae on Nutrient Agar
Circular, dome-shaped, mucoid, translucent, or opaque greyish white colonies; 2-3 mm diameter.
Klebsiella pneumoniae on Blood Agar
Circular, dome-shaped, mucoid, translucent or opaque greyish white colonies; 2-3 mm diameter; γ- hemolysis (no hemolysis).
Klebsiella pneumoniae on Mac-Conkey Agar
Circular, convex, mucoid, pink to red-colored opaque colonies; 2-3 mm in diameter.
Klebsiella pneumoniae on Violet Red Bile Agar (VRBA)
Large, mucous, and golden- or dull-yellow colored colonies.
Klebsiella pneumoniae on XLD Agar
Yellow, surrounded by yellow zones, opaque, mucoid with precipitation zones.
Klebsiella pneumoniae on Salmonella Shigella (SS)
Pink or red to cream-colored, mucoid, opaque colonies.
Klebsiella pneumoniae on EMB agar
Circular, dome-shaped, mucoid, pink to purple colored translucent or opaque colonies; 2-3 mm in diameter.
Klebsiella pneumoniae on Bile Esculin Agar
Growth with blackening of the medium within 4 hr.
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