Abstract
A novel air separation system based on permeable membrane gas separation technology was used to cultivate Escherichia coli. The system fulfilled the dissolved oxygen requirements of a culture of E. coli grown on a glucose synthetic medium at a high and constant growth rate of 0.55 h-1. A biomass yield of 45 g (dry weight) per liter was achieved, and no by-product inhibition by acetate or CO2 was observed.
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