Plant Diversity ›› 2014, Vol. 36 ›› Issue (01): 116-122.

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Chemical Composition and Antimicrobial Activities of Essential Oils of Laggera pterodonta Collected in Four Different Locations in Yunnan, China*

 GU  Jian-Long-1、2, Guy  SS NJATENG3, LI  Zhi-Jian-1, ZHANG  Hong-Xia-1, DAI  Qin-1、2, DU  Zhi-Zhi-1   

  1. 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
  • Online:2014-01-25 Published:2014-12-01


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 9332% (Kunming), 8057% (Lijiang), 9224% (Puer) and 9385% (Xinping) of total essential oils. Chemical compositions of essential oils differed between sample locations: thus, those from Kunming were rich in benzenoid compounds (3806%) while those from Lijiang and Puer were largely dominated by sesquiterpenes (1989% and 4465% respectively) and sesquiterpenes oxide (4085% and 3511%, respectively), and those from Xinping contained a high proportion of monoterpene hydrocarbons and sesquiterpene hydrocarbons (4223% and 3325% respectively) (7548%). 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.

Key words: Laggera pterodonta, Essential oil, GC-MS, Antimicrobial activity

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