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BAM Media M170: Tyrosine Agar

January 2001

Bacteriological Analytical Manual

Tyrosine Agar



Prepare Nutrient Agar (M112). Dispense 100 ml portions into 170 ml bottles. Autoclave 15 min at 121°C. Cool to 48°C.


Tyrosine suspension

Suspend 0.5 g L-tyrosine in 10 ml distilled water in 20 x 150 mm culture tube. Mix thoroughly with Vortex mixer. Autoclave 15 min at 121°C.


Final medium

Combine 100 ml base with sterile tyrosine suspension. Mix thoroughly by gently inverting bottle 2 or 3 times. Aseptically dispense 3.5 ml into 13 x 100 mm tubes with frequent mixing. Slant tubes and cool rapidly to prevent separation of tyrosine.


Hypertext Source: Bacteriological Analytical Manual, 8th Edition, Revision A, 1998.