Optical density values were maintained around 80 and viability at 88% at 72 hours elapsed fermentation time. Culture broth pH was well maintained at 5.0. We cultured yeast in an aerobic ...
Note - broth tubes can be made containing sugars other than glucose (e.g. lactose and mannitol). Because the same pH indicator (phenol red) is also used in these fermentation tubes, the same results ...
Colonies of lactose fermenting bacteria appear dark pink/red and non-lactose fermenting bacteria will appear colorless. Glucose fermentation broth tubes test for the ability of the organism to ferment ...