Chemical Composition and Bactericidal Activities of the Leaf Essential Oil of Eucalyptus maculata Hook

Abstract

This study examined the phytochemicals and medicinal potentials of the leaf essential oil of E. maculata from Nigeria. The essential oil was extracted by hydro-distillation technique and was analysed for various chemical composition using GC-MS. The essential oil was also screened for its antimicrobial activities against multi-drug resistant gram-positive and gram-negative bacteria using the agar well diffusion method. The GC-MS analysis revealed that β-citronellol (18.5%), β-pinene (9.4%), 2,6-dimethyl-2,6-octadiene (8.3%), α-pinene (7.1%), 2,6-dimethyl-1,3,5,7-octatetraene (6.7%), and citronellyl acetate (6.0%) were the major compounds in the leaf essential oil. The essential oil exhibited strong antibacterial activities against most of the tested bacteria, with diameters of inhibition zones ranging from 15.0-30.0 mm. The leaf essential oil of E. maculata is a possible alternative antibiotic drug for treatment of disease caused by multi-drug resistant bacteria.

Identification and Prediction of Potential Drug-like Compounds From Ruku-Ruku Leaves (Ocimum tenuiflorum Linnen) in West Sumatera

“…Compound A conducted an antibacterial test on the leaves of Eucalyptus maculata Hook. Inside the leaf contains compound A of 0.3 percent [4]. The same analysis was also carried out on the next peak compound, compound B.…”

Synthesis, spectroscopic, biological activities and DFT calculations of nickel(II) mixed-ligand complexes of tridentate Schiff bases

“…Antimicrobial activities were expressed as inhibition diameter zones in millimeter (mm). Standard Gentamycin (10 µg mL -1 ) was employed as control 17,20,21 .…”