Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XII
Written by Maria IHTYAROVA, Violina ANGELOVA
Comparative research has been conducted to determine the content of heavy metals and chemical composition of costmary oils, as well as to identify the possibility of costmary (Tanacetum Balsamita L.)| growth on soils contaminated by heavy metals. Costmary is a plant tolerant of heavy metals and can be grown on contaminated soils. Heavy metals do not affect the development of costmary and the quality of oil obtained from it. Twenty-three components were identified, accounting for 98.26-98.99% of the total oil components. The major components (> 1.0%) contained in costmary oil are carvone (42.66-44.12%), alpha-thujone (29.81-30.07%), beta-bisabolene (5.51-6.24%), 1,8-cineole (2.71-3.58%), beta-thujone (2.47-2.60%), cis-para-mentha-1(7),8-dien-2-ol (1,63-1,72%), trans-para-mentha-2,8-dienol (1.34-1.41%), cis-carveol (1.20-1.74%), and gamma-muurolene (1.69-1.78%). The content of oxygen-containing monoterpenes (88.75-89.41%) is the highest in costmary oil, followed by sesquiterpene hydrocarbons (7.74-8.35%), oxygen-containing sesquiterpenes (1.0-1.06%) and monoterpene hydrocarbons (0.58-0.61%). The analysed costmary oils belong to the carvone - α-thujone chemotype.
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