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ESSENTIAL OIL COMPOSITION AND ANTIMICROBIAL SCREENING OF LAUNAEA NUDICAULIS GROWN IN OMAN

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Author(s): Afaf Mohammed Weli et al.

Journal: International Journal of Pharmaceutical Sciences and Research
ISSN 0975-8232

Volume: 2;
Issue: 12;
Start page: 3166;
Date: 2011;
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Keywords: Launaea nudicaulis | Essential oil | GC/MS | Oman

ABSTRACT
The essential oil of the aerial parts of Launaea nudicaulis was isolated using Clevenger's apparatus and analyzed by GC/MS instrument. Different extracts of the aerial parts of Launaea nudicaulis were tested for their activity against Staphylococcus aureus and Escherichia coli. Seventeen constituents were identified in the essential oil. The major constituents in the essential oil are limonene, Z-citral and E-citral. The three polar extracts (hydro alcoholic, Ethyl acetate and butanol extracts) showed good activity against Gram +ve and Gram-ve bacteria. On the other hand, non-polar extracts (petroleum ether extract and chloroform extract) did not show any antibacterial activity.
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