Composition and antimicrobial activity of essential oils of two populations of Tanzanian Lippia javanica (Burm. f.) Spreng. (Verbenaceae)

The chemical composition of essential oils obtained from leaves of two samples of Lippia javanica (Burm. f.) Spreng, collected from the same locality in Tanzania, was analysed by GC and GC–MS. Sixty constituents (91.3%) of one sample and 38 constituents (76.0%) of the other sample were identiﬁed. Th...

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Bibliographic Details
Published in:	Flavour and fragrance journal Vol. 18; no. 3; pp. 221 - 224
Main Authors:	Ngassapa, Olipa, Runyoro, Deborah K. B., Harvala, Evangelia, Chinou, Ioanna B.
Format:	Journal Article
Language:	English
Published:	Chichester, UK John Wiley & Sons, Ltd 01-05-2003 Wiley
Subjects:	antimicrobial activity Applied sciences Biological and medical sciences Chemical industry and chemicals Essential oils, perfumes Exact sciences and technology General pharmacology Lippia javanica Medical sciences Pharmacognosy. Homeopathy. Health food Pharmacology. Drug treatments volatiles Washing products. Cosmetics and toiletries. Perfumes Africa Tanzania Chemical analysis Alcohol Steam distillation Flame ionization detector Antimicrobial agent Medicinal plant Fungi Antifungal agent Dicotyledones Sesquiterpenes Angiospermae Chemical composition Essential oil Fungi Imperfecti Acylate Thallophyta Terpenoid Hydrocarbon Coupled method Pharmacognosy Plant leaf antimicrobial activity Aldehyde Ketone In vitro Biological activity Gas chromatography Lippia javanica Verbenaceae Candida Monoterpene Spermatophyta Antibacterial agent Mass spectrometry volatiles
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Summary:	The chemical composition of essential oils obtained from leaves of two samples of Lippia javanica (Burm. f.) Spreng, collected from the same locality in Tanzania, was analysed by GC and GC–MS. Sixty constituents (91.3%) of one sample and 38 constituents (76.0%) of the other sample were identiﬁed. The main components of the two oils were geranial, neral, limonene, germacrene‐D, camphor, linalool, β‐caryophyllene and myrcene. The two oils were signiﬁcantly different in their chemical composition. This implies that the two L. javanica populations could be two different chemical races. Furthermore, antimicrobial activity of the oils was evaluated against six Gram‐positive or Gram‐negative bacteria and three pathogenic fungi, using the agar dilution technique. It was found that both oils exhibited moderate to strong activities against the bacteria tested, while both were inactive against the fungi tested. Copyright © 2003 John Wiley & Sons, Ltd.
Bibliography:	ArticleID:FFJ1195 Muhimbili University College of Health Sciences, Tanzania. istex:3D8FE9D48BF2E73CC8B2E270948B8AF4E820D440 ark:/67375/WNG-3WPWQNRH-9 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0882-5734 1099-1026
DOI:	10.1002/ffj.1195