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Year : 2020, Volume : 13, Issue : 12
First page : ( 5953) Last page : ( 5957)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2020.01039.2

Effect of altitude on essential oil composition, antifeedant and antimicrobial potential of Murraya koenigii isolated from different regions of North Himalaya

Negi Poonam1*, Pandey Shivam1, Rawat Bhupendra Singh2, Ramola Bharti1, Kalra Gunjan1, Thakur Ritu1

1Department of Chemistry, SALS, Uttaranchal UniversityDehradunUttarakhand, India.

2Department of Physics, SALS, Uttaranchal University, DehradunUttarakhand, India.

*Corresponding Author E-mail: poo.chm20@gmail.com

Online published on 15 February, 2021.


Altitude is an important factor, which can affect the growth of a plant, its overall composition and various biological activities. In present study leaves essential oil of Murraya koenigii collected from different regions of north Himalaya were isolated and tested for its antifeedant and antimicrobial properties. Chemical composition of Murraya koenigii essential oil was identified by means of GC-MS. The maximum composition was seen in region of highest altitude (Mandi, HP) and minimum was found in lowest altitudinal region (Delhi). In all the three cases 150 components were identified. Major component found in essential oil from Dehradun and Delhi region was sabinene while a-pinene was the major component of from Mandi (HP) sample. Maximum Antifeedant activity was shown by essential oil isolated from Mandi (HP) region of highest altitude whereas minimum was shown by essential oil isolated from Delhi. For antimicrobial activity essential was found to be more effective against Gram-positive bacteria then Gram negative bacteria. S. aureus was the most sensitive bacterial strain and showed maximum antimicrobial activity in oil of highest altitude (HP region) whereas it is least in Delhi sample. Thus the comparative study of composition of oils from three different regions showed almost similar overall compositions but significant differences in relative yield of components. Significant antifeedant and antimicrobial activities were shown with slight variations, by essential oils isolated from regions with altitudinal differences.



Essential oil, Altitudinal variation, Antifeedant activity, Antimicrobial activity, Murraya koenigii, Spodoptera litura.


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