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The Composition of Essential Oil from Nepeta cateria and its Effect on Microorganism

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2006, v.29 no.4, pp.381-387
김종희 (경남대학교)
정대호 (경남대학교)
박현경 (경남대학교)
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Abstract

We analyzed the total yields and composition of essential oils in leaf extracts ofNepeta catariaby Gas Chromatography Mas Spectrometry (GC-MS). Thirty-six compounds representing 97.0% of total oil weredetected. The major constituents of essential oils inNepeta cataria were nepetalactone (90.9%), unidentifiedcompound (Retention time 17.35; 1.82%), 1,8-cineol (1.49%),β-caryophyllene (1.12%), and β-pinene (1.078%).The volatile compounds in leaf extracts ofN. catariaconcentrated to nepetalactone (88.83 93.33%) remarkably.~In the essential oil ofN. cataria cis,trans-nepetalactone (30.2 37.8%) and~ cis,cis-nepetalactone (31.5 37.0%)~were found as the main constituents. The effects of essential oil ofN. catariaon t h e g r o w t h o f s i x m i c r o -organisms (Bacillus cereus, B. subtilis, B. amyloliquefaciens, Escherichia coli, subsp.aureus, and Pseudomonas aeruginosa ) were investigated. The sential oil of N. catariahad strong inhibitoryeffect on the growth of three fungal species (Bacillus cereus,B. subtilis, and B. amyloliquefaciens). The essentialoil fromN. catariawas found to have a low antimicrobial activity againstStaphylococcus aureus subsp. aureus,while no activity were found againstEscherichia coli and Pseudomonas aeruginosa . Results indicate thesignificant antimicrobial effect, which may be depended on the yield of nepetalactone.

keywords
Essential oil, GC-MS, Inhibitory effect, Nepeta cataria, Nepetalactone, Retention timeKim, Jong Hee t al. J . E c o l . F i e l d B i o l . 2 9 ( 4 ) 382lene oxide or 1, 8-cineole/linalool as the main constituent in theiressential oils (Baser et al. 2, Essential oil, GC-MS, Inhibitory effect, Nepeta cataria, Nepetalactone, Retention timeKim, Jong Hee t al. J . E c o l . F i e l d B i o l . 2 9 ( 4 ) 382lene oxide or 1, 8-cineole/linalool as the main constituent in theiressential oils (Baser et al. 2

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Journal of Ecology and Environment