B684 

PHENYLALANINE MALONATE BROTH 

(Shaw & Clarke Medium)

Formula

Ingredients 

gms/lit.

Yeast extract

Sodium malonate

DL-phenylalanine

Ammonium sulphate

Dipotassium phosphate

Monopotassium phosphate

Sodium chloride

Bromo thymol blue

1.00

3.00

2.00

2.00

0.60

0.40

2.00

0.025

Final pH (at 25°C) : 6.3 + 0.2

Directions 

Suspend 11 gms. in 1000ml. distilled water. Heat to boiling to dissolve the medium completely. Dispense in tubes and sterilize by autoclaving at 10 lbs pressure (115°C) for 10 minutes.

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