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Chemical analysis and biological activities of the essential oil of Teucrium leucocladum Boiss. (Lamiaceae)
Faculty
Pharmacy
Year:
2004
Type of Publication:
Article
Pages:
665-674
Authors:
El-Shazly, AM, Hussein, KT
DOI:
10.1016/j.bse.2003.12.009
Journal:
BIOCHEMICAL SYSTEMATICS AND ECOLOGY PERGAMON-ELSEVIER SCIENCE LTD
Volume:
32
Research Area:
Biochemistry \& Molecular Biology; Environmental Sciences \& Ecology; Evolutionary Biology
ISSN
ISI:000222415200004
Keywords :
Teucrium leucocladum, Lamiaceae, essential oil, n-hexane-ether extract, patchouli alcohol, alpha-cadinol, larvicidal, antimicrobial
Abstract:
The chemical composition of the water-distilled essential oil and n-hexane-ether extract of Teucrium leucocladum Boiss. were determined by GLC and GLC-MS. Altogether 72 compounds were identified. The sesquiterpene alcohols, patchouli alcohol (31.24\% and 29.66\%) and alpha-cadinol (9.29\% and 21.54\%) were the main components in the oil and the extract, respectively. alpha-Cadinol was isolated and characterized using MS, H-1- and C-13-NMR spectral analyses. Furthermore, the oil and the extract were tested for their bacterostatic and antifungal activities; they showed broad and potent activity against Pseudomonas aeruginosa, Bacillus subtilis and Candida albicans. A marked larvicidal activity of the essential oil, n-hexane-ether extract and crude ethanolic extract was also observed against Culex pipiens, Musca domestica and Ceratitis capitata larvae. (C) 2004 Published by Elsevier Ltd.
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