COMPONENT COMPOSITION OF THE ESSENTIAL OIL OF MYRICA GALE L. FROM INTRODUCTION

Myrica gale L. (Myricaceae) is one of the rare and protected plant species in Russia. In 2011, during the construction of a section of the intracity toll highway in St. Petersburg, the route was laid through the Yuntolovsky forest park, where there was a significant population of Myrica gale. Some of the plants were transplanted to the territory of the Yuntolovsky reserve, and some to the park of the Komarov Botanical Institute RAS (St. Petersburg). In this work, the component composititon of the essential oil of Myrica gale leaves growing in new locations was studied. The essential oil was obtained by hydrodistillation. The yield of essential oil from Myrica gale leaves collected on the territory of the Yuntolovsky reserve ranged from 0.21 to 1.55%. 52 components were identified, among which the main ones were (Z)-nerolidol (15.71%), germacrene B (11.47%), δ-cadinene (9,76 %), an unidentified component Un 1532 with tR=19.92 min (9.34%) and 1,10-di-epi-cubenol (5.61%). The yield of essential oil from Myrica gale leaves collected on the territory of BIN RAS park is from 0.09% to 0.13%. 49 components were identified, among which the predominant ones were δ-cadinene (14.11%), 1,10-di-epi-cubenol (8.59%), (Z)-nerolidol (8.43%), 1,8-cineole (6.01%) и (Е)-caryophyllene (5.01%). It was determined that in the studied populations the prosess of formation of acyclic sesquiterpene alcohols dominates, which leads to a significant accumulation of nerolidol. In general, a change in the habitat of Myrica gale (transplantation of some plants into the Yuntolovsky reserve and the park of the BIN RAS) did not significantly affect the terpene profile of the essential oil.