The variability in content of essential oil and its main components in Hypericum perforatum biomass and Hypericum maculatum in culture in the North

The results of studying of the flowering period and indicators characterizing the raw phytomass of plant shoots of Hypericum perforatum and H. maculatum of different geographical origin when grown under conditions of middle taiga subzone of the Komi Republic are presented. Due to the methods of gravimetry and GC essential oil have been bled from raw fresh species. It has been revealed that the yield of essential oil from plants H. perforatum, grown from the seeds of Russian origin was 0,17-0,21%, foreign - 0,25-0,33%. The same indicator (0,19-0,30%) in samples of H. maculatum was not significantly different from H. perforatum. The component composition of the essential oil has been investigated by Gas chromatographic method. 26 components, among which the main ones are germakren D (16,8-33,6%), β-caryophyllene (6,3-8,7%), α-kadinol (1,9-4,5%), (Z) -β-ocimene (12-14%) have been identified.