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High Performance Thin-Layer Chromatography of Plant Ecdysteroids Coupled with Desorption Electrospray Ionisation-Ion Mobility-Time of Flight High Resolution Mass Spectrometry (HPTLC/DESI/IM/ToFMS)

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Academic year: 2021

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Fig. 1    a MS spectra of each ecdysteroid standard (ponasterone A,  ecdysone, kaladasterone, inokosterone and 20-hydroxyecdysone)  at b the specific drift time (Dt) of the sodiated molecular ion
Fig. 2    a Overlay of the DESI-extracted chromatograms of the differ- differ-ent molecules separated on the TLC plate from extract S
Fig. 3    Overlay of the UV-absorbing trace of the TLC plate before DESI acquisition with the ion images of the different colour coded spots of  different m/z for S, otitis (SO1), S
Fig. 4    a Extracted mobilograms of m/z 519.29 for a 1  polypodine B  (PPB) standard, a 2  S

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