Chemical composition and antimicrobial activity of the essential oils from stems and leaves of <i> Michelia alba </i> D.C. growing in Vietnam

Authors

  • Chu Thi Thu Ha Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology https://orcid.org/0000-0002-3479-9469
  • Tran Huy Thai
  • Le Ngoc Diep
  • Trinh Xuan Thanh
  • Dinh Thi Thu Thuy
  • Nguyen Thanh Tra
  • Nguyen Thi Thu Ha

DOI:

https://doi.org/10.15625/2615-9023/v40n3.13151

Keywords:

Michelia alba, essential oil composition, stem oil, leaf oil, antimicrobial activity.

Abstract

The chemical composition of the essential oils obtained by hydrodistillation of the stems and leaves of Michelia alba D.C. growing in North Vietnam was analyzed using GC/MS. In total, 28 compounds were identified in both stem and leaf oils, accounting for 99.33% and 99.54% of the oils, respectively. Linalool was the major component of both oils (80.65% and 72.89%, respectively), and other 22 compounds were also present as the constituents of both oils with varying amounts except 1,10-di-epi-cubenol present only in stem oil, whereas borneol (=endo-borneol), α-copaene, α-selinene and ethyl 2-phenylhexanoate were found only in leaf oil. In the stem oil, (Z)-β-ocimene (1.94%), (E)-β-ocimene (2.28%), β-caryophyllene (1.26%), (E)-nerolidol (1.15%), caryophyllene oxide (2.26%) and epi-α-muurolol (=T-muurolol) (1.80%) were present in sizeable amounts. The minor components detected in the leaf oil were (Z)-β-ocimene (1.73%), (E)-β-ocimene (2.28%), Cis-β-elemene (3.03%), β-caryophyllene (4.04%), α-humulene (1.44%), (E)-nerolidol (4.42%) and caryophyllene oxide (1.36%). Antibiotic activity of the essential oil samples was tested against Gram positive bacteria Staphylococcus aureus, Gram negative bacteria Escherichia coli, and yeast Candida albican using an agar disk diffusion method. The antimicrobial activity of leaf oil was stronger than that of stem oil, although both oils have significant inhibitory activity against all three microorganisms tested with the inhibitory zone diameters ranging from 15.5 to 46.5 mm.

 

Downloads

Download data is not yet available.

Author Biography

Chu Thi Thu Ha, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology

Department of Plant Resources

Downloads

Published

30-09-2018

How to Cite

Ha, C. T. T., Thai, T. H., Diep, L. N., Thanh, T. X., Thu Thuy, D. T., Tra, N. T., & Thu Ha, N. T. (2018). Chemical composition and antimicrobial activity of the essential oils from stems and leaves of <i> Michelia alba </i> D.C. growing in Vietnam. Academia Journal of Biology, 40(3). https://doi.org/10.15625/2615-9023/v40n3.13151

Issue

Section

Articles

Most read articles by the same author(s)

1 2 3 > >>