Fig. 3

Identification of carotenoids produced by P. aminophilus CRT1 and P. kondratievae CRT2. a, b. Qualitative UPLC analysis of carotenoids of P. aminophilus P. kondratievae strains with and without plasmid pCRT01. The individual peaks on the chromatograms are annotated with the retention time and carotenoid identity. Only peaks for carotenoids produced at the level above 3.1 mol % (strain CRT1) or 4.2 mol % (CRT2) are visible. The peaks with different retention time (but with the same mass-to-charge, m/z, value) represent isomeric forms of the individual carotenoid species. C. Profiles of carotenoids produced by P. marcusii OS22, P. aminophilus CRT1 and P. kondratievae CRT2