Determination of selected substances in phytopharmaceuticals

Thyme, linden and cuban oregano are plant that have positive effect of upper respiratory tract infections. The most common are used in the form of teas and syrups. In this thesis were analyzed methods, which are used to specify substances in plants. It describe methods like stem distillation, SPME and GC/MS. The main aim of the thesis was found out subsances, which occur in herbs. Thymol was the substance which was found in every analyzed herb. The thyme contain o-cymen, in mixture of thyme was proofed thymol, borneol, 1-octene- 3- ol, linalol, estragol a 4- terpeneol. The linden has substances estragol a - terpinen. Characteristic substancies od the mixture of linden were o-cymen, estragol a - terpinen. In the cuban oregano were proofed – pinen, camphor, - terpinen. The method SPME was used to analyzed substances in syrup and main substances were thymol a -elemen