Figure 13

LC-MS chromatograms of H. perforatum callus extracts. Chromatogram (A) and mass spectrum (B) of hypericin and pseudohypericin standard solution. Chromatogram of the extracts of control calli obtained from in vitro grown (C) and field grown plants (D), calli obtained from in vitro grown plants treated with 100 mg/L of perlite NPs (E), calli obtained from field grown plants treated with 100 mg/L of perlite NPs (F), calli obtained from in vitro grown plants treated with 50 mg/L of TiO2/perlite NCs (G), and calli obtained from field grown plants treated with 50 mg/L of TiO2/perlite NCs (H).