Chemical Composition and Antimicrobial Activities of Essential Oils of Laggera pterodonta Collected in Four Different Locations in Yunnan,China* |
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Authors: | GU Jian-Long Guy SS NJATENG LI Zhi-Jian ZHANG Hong-Xia DAI Qin DU Zhi-Zhi |
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Affiliation: | 1.State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy ;of Sciences, Kunming 650201, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Laboratory of Microbiology and Antimicrobial Substances, Faculty of Science, ;University of Dschang, P.O. Box 67 Dschang, Cameroon |
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Abstract: | Essential oils obtained by hydrodistillation from leaves of Laggera pterodonta collected from four different locations (Kunming, Lijiang, Puer and Xinping) in Yunnan, China, were analyzed using GC MS and GC FID. The number of compounds identified in each sample was 39, 37, 33 and 44, respectively, representing 9332% (Kunming), 8057% (Lijiang), 9224% (Puer) and 9385% (Xinping) of total essential oils. Chemical compositions of essential oils differed between sample locations: thus, those from Kunming were rich in benzenoid compounds (3806%) while those from Lijiang and Puer were largely dominated by sesquiterpenes (1989% and 4465% respectively) and sesquiterpenes oxide (4085% and 3511%, respectively), and those from Xinping contained a high proportion of monoterpene hydrocarbons and sesquiterpene hydrocarbons (4223% and 3325% respectively) (7548%). The results of tests on the antimicrobial activities of essential oils indicated that chemical composition was affected by environmental variation causing differences in sensitivity to microbes among samples. |
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Keywords: | Laggera pterodonta Essential oil GC-MS Antimicrobial activity |
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