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Transformation of PPTGM by recombinant BglQM, as assessed by HPLC. (a) The ginsenoside peaks of PPTGM; (b) the reaction mixture after treatment with BglQM for 50 h; (c) (S)-Rg2 after silica resin purification; and (d) (S)-Rh1 after silica resin purification. PPTGM, protopanaxatriol-type ginsenoside mixture.
