Humans have taken advantage of the metabolism ... fermentation: alcoholic and lactic acid. Alcoholic fermentation occurs by the action of yeast; lactic acid fermentation, by the action of bacteria.
The Toepler high vacuum mercury pump with modifications and connections which make it efficient for drawing off accurately gas samples from bacterial cultures is described. The Burrell gas analysis ...
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 ...
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