Possible occurrence of a Crabtree effect in the production of lactic and butyric acids by a floc-forming bacterial consortium

Lactic and butyric acid production by bacterial flocs in a continuous culture obeyed different physiological constraints. The butyric acid rate of production was constant and independent of the growth rate [0.012 +/- 0.001 gBUT/(L.h)], whereas lactic fermentation occurred only beyond a critical grow...

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