Component Composition of Essential Oils <i>Curcuma longa</i> L. (Zingiberaceae) Introduced in Uzbekistan
- 1 National University of Uzbekistan, Tashkent, Uzbekistan
- 2 Institute of Botany, Academy Sciences Republic of Uzbekistan, Tashkent, Uzbekistan
Abstract
This article presents the results of studying the component composition of essential oils of leaves and rhizomes of C. longa grown in Uzbekistan. The chemical composition of essential oils of vegetative organs of the Curcuma longa (Zingiberaceae) plant introduced in Uzbekistan was studied for the first time. Essential oils of the plant were isolated by hydrodistillation, their chemical composition was studied by chromatography-mass spectrometry. In the composition of essential oils of leaves and rhizomes C. longa L., introduced in the Tashkent oasis, found 27 and 16 components, respectively, among which the leaf is dominated by α -fellandren (33.79%), α -terpinolene (24.28%), n -cymene (12.27%), eucalyptol (9.77%), and in the rhizomes - 6-(1,3-dimeth yl-buta-1,3-dienyl)-1,5,5-trimethyl-7-oxa-bicyclo [4.1.0] hept-2-EN (22.77%), α -curcumene (4.11%), 2,6,6,9-tetramethyl-tricyclo [5.4.0.0(2.8)] undec-9-EN (3.81%), α -zedren (1.14%), as well as 3 components that were not identified (the mass spectrum did not match the library data) their mass fraction was 47.47%, 10.41% and 3.46%. The composition of leaves and rhizomes of C. longa differ quantitatively and in quality. For example, α - curcumene in percentage content is more contained in rhizomes, and α -fellandren, which is the dominant content in leaves, is not found in the underground part.
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