Figure 9.

Relative decaprenoxanthin production by C. glutamicum strains carrying various deletions. Cells were grown in 40 g L⁻¹ of glucose CGXII minimal medium. C. glutamicum WT ΔaceE was grown with 20 g L⁻¹ of potassium acetate and 40 g L⁻¹ of glucose in CGXII minimal medium. Decaprenoxanthin production was determined by HPLC analysis. Due to the medium differences, decaprenoxanthin contents in mg g⁻¹ CDW (a) and concentrations in mg L⁻¹ (b) were normalized to the values obtained with the parental WT strain. Mean values and standard deviations of triplicates are given. The p-values of <0.001 (***), and <0.01 (**) were calculated using Student’s t-test (two sided, unpaired). For abbreviations, see Figure 3.