ХИМИЧЕСКИЙ СОСТАВ ЭФИРНОГО МАСЛА ZIZIPHORA PAMIROALAICA LAM. (LAMIACEAE), ПРОИЗРАСТАЮЩЕЙ В ТАДЖИКИСТАНЕ

Ziziphora pamiroalaica Lam. (Lamiaceae) is a medicinal plants used in Tajikistan for the treatment of the diseases of cardiovascular system and gastrointestinal tract. In the present study the composition of essential oil of herb Z. pamiroalaica growing in the Gorno-Badakhshan Autonomous Region was studied for the first time. The method of gas chromatography / mass-spectrometry allowed to identify thirty-four compounds including monoterpenes, aliphatic alcohols, ethers and phenols sesquiterpenes. The dominant components of the essential oil were pulegone (52,7–60,4%), thymol (7,5–11,1%), isomenthone (7,1–10,6%) and menthone (3,9–6,3%). The known information about the composition of essential oil of Z. pamiroalaica of Chinese origin showed the lower content of pulegone in the latter sample (45,9%) as well as a greater concentration and neomenthol and isomenthone. It is found that the height of the plant growth reflects on the quantitative ratio of individual components of the essential oil especially mono- and sesquiterpenes. The principal component analysis was used for the comparative study of data about the chemical composition of essential oils of ten species of Ziziphora genus. The principal component analysis was used to show that the chemical composition of essential oils Z. pamiroalaica close to that of Z. clinopodioides, As a result, it was found that the chemical composition of essential oil of Z. pamiroalaica similar to that of Z. clinopodioides but differs from it by less pulegone content.