Isothermal kinetics of ethanolic extraction of total hypericin from pre‐extracted Hypericum perforatum flowers

Introduction Hypericum perforatum L., Hypericaceae (St John's wort) is a highly familiar plant in the medicinal community which recently showed good antiviral activities including against some types of coronavirus. Objective Establishing the kinetics of isothermal extraction of total hypericin (TH) from the pre‐extracted flowers of H. perforatum flowers. Methods The solvent extraction of TH from the remaining solid residue after the...