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  1. Laboratory Methods (Food)

BAM Media M116: OF Glucose Medium, Semisolid

Media Index for BAM

January 2001

Tryptone (trypticase) 2 g
NaCl 5 g
Dipotassium phosphate 0.3 g
Bromthymol blue dye 0.03 g
Agar 2 g
Glucose 10 g
Distilled water 1 liter

Boil ingredients to dissolve.

For halophilic Vibrio spp., add 15 g NaCl (2% NaCl, final concentration) to medium.

Dispense 5 ml into 13 × 100 mm tubes and autoclave 15 min at 121°C. Final pH, 6.8 ± 0.2.

*To use OF medium with sugars other than glucose, prepare medium without glucose in 900 ml water, sterilize as above, and cool to 45-50°C. Add 100 ml of 10% solution of filter-sterilized sugar to basal medium. Aseptically dispense 5 ml into sterile 13 × 100 mm tubes.

For Campylobacter, prepare half the tubes with glucose and half without.

For use with halophilic Vibrio spp., add NaCl to a final concentration of 2-3%.

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

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