Essential and Toxic Microelements in the Medicinal Remedy Hyperichi herba by Different Producers

Medicinal plants are cultivated with a range of agricultural practices under different ecological conditions. Since the high number of species and different plant organs are used, a high botanical variability in plant compounds is also observed11-13. According to the GACP, seeds or planting stock and cultivating conditions are standardised with compulsory documenting21-23. [...]no correlation between the detected Mn and Fe contamination of water bodies and the environmental load was observed in38 because both recreation lands and lands transformed by a high anthropogenic impact demonstrate similar levels of the pollution coefficients. Principal Component Analysis: Evidently, the chemical composition and properties of plants are determined by an ensemble of available chemical elements and compounds. [...]a transition from a large number of variables to a limited number of new variables that would adequately describe the collective effect of all presented chemical elements simplifies a multi-component system.