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HPLC analysis of purified MT1 from the product mixture. (STD1), ginsenoside Rg2(S) standard; (STD2), standards of ginsenosides Rg1, Re, F1 and PPT; (A), substrate ginsenoside Re before purification; (B), biotransformed products from the MT619 conversion mixture; (C), MT1 isolated using Recycling preparative high-performance liquid chromatography (RPHPLC).
