Fig. 5From: Engineering Escherichia coli for the utilization of ethylene glycolInfluence of aeration on glycolate production. To assess the impact of oxygen level in bioreactors, two aeration rates were tested during the production (micro-aerobic) phase of the fermentation. A flow rate of 50Â mL/min was tested for the low aeration rate (a), while a flow rate of 150Â mL/min was tested for the high aeration rate (b). Experiments were performed in duplicate. Error bars indicate the range of the measured valuesBack to article page