Improved Production of Tryptophan in Genetically Engineered Escherichia coli with TktA and PpsA Overexpression
Figure 2
Tryptophan fermentation by strain TRTH0709, TRTH1011, TRTH1012, and TRTH1013 in fed-batch jar-fermentor cultivation; glucose and glucose consumption rate (a) arrow indicates the point at which feeding with 80% glucose solution began; biomass, (b) tryptophan, (c) data represent mean values from three independent cultures; standard deviations from means are indicated as error bars.
