부산대학교 도서관

By the method of exhaustive hydroparodistillation, essential oil was isolated from the aboveground part of Yenisei thyme (Thymus jenisseensis Iljin), which grows on the territory of the Krasnoyarsk Territory. Separate fractions of essential oil were obtained depending on the duration of isolation. The composition of whole essential oil was established, the main components of which are borneol (17.9%), camphor (10.6%) and α-terpineol (10.8%), and the maximum content of borneol (30.5%) and α-terpineol (19.9%) was noted in the fourth fraction. For the first time, the antiradical properties of T. jenisseensis essential oil were studied in a model reaction with a free stable 2,2-diphenyl-1-picrylhydrazyl radical. It is shown that all the studied samples of essential oil exhibit antiradical activity (ARA), the value of which increases from 14.6% (the first fraction) to 41.1% (the fourth fraction). ARA of the fifth fraction was 35.4%, whole oil—26.4%. An increase in antiradical activity was noted with a decrease in the number of monoterpenes and an increase in the content of oxygen-containing compounds in the composition of essential oil. The correlation coefficient (r) of APA on the content of oxygen–containing compounds was 0.99, for sesquiterpenes—r = 0.84, for monoterpenes—r = –0.94. [ABSTRACT FROM AUTHOR]