Figure 1

Mass spectrometric analysis of fungal paclitaxel sample of strain YEF2. The arrows show an (M + Na+) ion with mass-to-charge ratio (m/z) 876, an (M + H+) ion with m/z 854 and an (M + NH4+) ion with m/z 871 and asterisks indicate fragments ions of mass spectroscopy of paclitaxel that is necessary for identifying paclitaxel.