Properties of essential oils of annual species of the Lamiaceae family

Data of the study and analysis of the essential oil properties of 5 species of Lamiaceae family ( Salvia viridis L., Ocimum basilicum L., Satureja hortensis L., Ziziphora tenuior L., Clinopodium acinos (L.) Kuntze) common in the Lesser Caucasus botanical-geographical region is devoted in the paper. Essential oils were obtained from plants in different phases (0.12-3.06%), their physical and chemical constant features, qualitative and quantitative composition were determined depending on the effects of environmental conditions. Quantitative and, to some extent, qualitative changes occur in the composition of essential oils in various organs has been established. The essential oils of the studied species have an odor reminiscent of lemon and mint. The essential oil of these plants is a transparent substance that is lighter than water. To clarify the physicochemical properties of substances, their specific gravity (D2020), refractive index (n20D), acid number, ether number, and ether number after acetylation were determined.