Fig. 2
TLC and UPLC-UV analysis of menaquinones (MKs) from Microbacterium yannicii JCM 18959T obtained using different MK extraction methods. A UPLC-UV analysis of MKs (absorbance at 270 nm) extracted via the Collins method; B UPLC-UV analysis of MKs extracted via the LCM method. C and D: TLC of MKs (exposure to UV radiation at 254 nm) extracted via the Collins method and LCM method, respectively. Strain M. yannicii JCM 18959T was chosen as a representative because the fold change of the MK concentration represents the median number of all tested strains. The peak area is shown in parentheses