Fig. 5

Comparison of cell growth (a), substrate consumption (b) and l-lysine production (c), and by-products accumulations (d) of strains K-6, K-7 and K-8 in fed-batch fermentation. Signals denote: Strain K-6 (filled square, blue lines or bars), strain K-7 (filled triangle, green lines or bars) and strain K-8 (filled diamond, red lines or bars). The data represent mean values and standard deviations obtained from three independent cultivations