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Chemical Constituents of Essential Oil from Leaves of an Invasive Weed Ageratina adenophora in Central Nepal


Affiliations
1 Department of Chemistry, Trichandra Campus, Tribhuvan University, Kathmandu, Nepal
2 Central Department of Botany, Institute of Science and Technology, Tribhuvan University, Nepal
3 Department of Food Technology and Quality Control, Government of Nepal, Kathmandu, Nepal
4 Department of Forest Resources, Ministry of Forest and Environment, Plant Research Center, Jumla, Nepal
5 Department of Biology, Kailali Multiple Campus, Far Western University, Kailali, Nepal
6 Central Department of Environmental Science, Institute of Science and Technology, Tribhuvan University, Nepal
7 Biological Resource Unit, Nepal Academy of Science and Technology, Lalitpur, Nepal
 

This study aims to identify volatile chemical components in the essential oil of an invasive plant, Ageratina adenophora, from Central Nepal. Leaf samples of A. adenophora were collected, and the chemical composition of essential oil was analysed by gas chromatography (GC) and GC–mass spectrometry (GC/MS). A total of 27 components in the oil were identified. The major compounds were cadinol, bisabolol and bornyl acetate. The amount of valencene, elemol and 2(1H)-naphthalenone, 4a,5,6,7,8,8a-hexahydro-6-[1-(hydroxymethyl)ethenyl]-4,8a-dimethyl-, [4ar(4a.alpha.,6.alpha.,8a.beta.]- varied with samples collected from different elevations. Five compounds, viz. cloven, β-gurjuene, β-cubebene, verbenone and cis-β-farnesene were rarely reported previously from A. adenophora. Being an invasive and medicinal plant, A. adenophora is found in varied ecological conditions. Further studies on the variation in amount and composition, phytotoxicity and benefits of such compounds are recommended.

Keywords

Ageratina adenophora, Chemical Constituents, Essential Oil, Gas Chromatography, Mass Spectrometry.
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  • Chemical Constituents of Essential Oil from Leaves of an Invasive Weed Ageratina adenophora in Central Nepal

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Authors

Khadka Bahadur Pal
Department of Chemistry, Trichandra Campus, Tribhuvan University, Kathmandu, Nepal
Seeta Pathak
Central Department of Botany, Institute of Science and Technology, Tribhuvan University, Nepal
Tayer Mohamad Miya
Department of Food Technology and Quality Control, Government of Nepal, Kathmandu, Nepal
Tej Bahadur Darji
Department of Forest Resources, Ministry of Forest and Environment, Plant Research Center, Jumla, Nepal
Gunanand Pant
Department of Biology, Kailali Multiple Campus, Far Western University, Kailali, Nepal
Ramesh Raj Pant
Central Department of Environmental Science, Institute of Science and Technology, Tribhuvan University, Nepal
Lok Ranjan Bhatt
Biological Resource Unit, Nepal Academy of Science and Technology, Lalitpur, Nepal
Lal B. Thapa
Central Department of Botany, Institute of Science and Technology, Tribhuvan University, Nepal

Abstract


This study aims to identify volatile chemical components in the essential oil of an invasive plant, Ageratina adenophora, from Central Nepal. Leaf samples of A. adenophora were collected, and the chemical composition of essential oil was analysed by gas chromatography (GC) and GC–mass spectrometry (GC/MS). A total of 27 components in the oil were identified. The major compounds were cadinol, bisabolol and bornyl acetate. The amount of valencene, elemol and 2(1H)-naphthalenone, 4a,5,6,7,8,8a-hexahydro-6-[1-(hydroxymethyl)ethenyl]-4,8a-dimethyl-, [4ar(4a.alpha.,6.alpha.,8a.beta.]- varied with samples collected from different elevations. Five compounds, viz. cloven, β-gurjuene, β-cubebene, verbenone and cis-β-farnesene were rarely reported previously from A. adenophora. Being an invasive and medicinal plant, A. adenophora is found in varied ecological conditions. Further studies on the variation in amount and composition, phytotoxicity and benefits of such compounds are recommended.

Keywords


Ageratina adenophora, Chemical Constituents, Essential Oil, Gas Chromatography, Mass Spectrometry.

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DOI: https://doi.org/10.18520/cs%2Fv124%2Fi6%2F757-761