Table 3. Comparison of the fermentation results of the original HD-1 strain and the aroA overexpressed strain HD-A2 by fed-batch fermentation.

	OD600	Phe concentration (g/L)	Phe yield on glucose (%)
HD-1	47.49 ± 2.21	45 ± 1.79	18.6 ± 0.97
HD-A2	50.04 ± 1.97	62.47 ± 2.03	23.62 ± 1.04

The OD, Phe concentration and yield were compared between HD-1 and HD-A2. The data is from three experimental replicates.