Evaluation of antibacterial effects of Eucalyptus camaldulensis L., extracts against some pathogenic bacteria in vitro and HPLC-DAD

Section: Article
Issue
Vol. 22 No. 2 (2026): Volume (22) Issue (2) June 2026
Pages
223-242

Abstract

       Our study  was carried out in  laboratory of Alnoor university –Iraq  in ( 2025) to identify active compounds and evaluate  in vitro antimicrobial which  include   effects  of  hexane and aquatic  extracts with three concentration  on two species of bacteria , the  phenolic compounds for  Eucalyptus camaldulensis tree  identify  active compounds extract was  prepared by using Soxhlet  hexane and Aqueous as a solvent HPLC High performers liquid Chromatography , was used to diagnose and identify  phenolic compounds in  Eucalyptus extract. Results showed  identification of 5 active phenolic compounds, (Quercetin, Kaempferol, Ferulic, Gallic acid, Rutine).


These differences in chemical compounds could be used as an important indicator for plant identification.    


The second aspect of  study investigated  inhibitory effect of two organic solvents on two bacterial species (Staphylococcus aureus and Escherichia coli). Research revealed that  inhibition rates varied depending on solvent used. Furthermore, the in vitro antimicrobial potential of E. Camaldulensis extracts demonstrated varying degrees of inhibition at different concentrations, which also differed between  Gram-positive and negative bacteria.

Keywords:

Plant extracts, Antibacterial, E. camaldulensis, S. aureus, Phenolic compounds

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Author

Talal Taha Ali

Alnoor university, College of Health & Medical Techniques, Clinical Nutrition Department, Mosul, Iraq.

Identifiers

DOI: 10.33899/berj.2026.Vol22.Iss2.61370

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Evaluation of antibacterial effects of Eucalyptus camaldulensis L., extracts against some pathogenic bacteria in vitro and HPLC-DAD. (2026). College of Basic Education Research Journal, 22(2), 223-242. https://doi.org/10.33899/berj.2026.Vol22.Iss2.61370
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Evaluation of antibacterial effects of Eucalyptus camaldulensis L., extracts against some pathogenic bacteria in vitro and HPLC-DAD. (2026). College of Basic Education Research Journal, 22(2), 223-242. https://doi.org/10.33899/berj.2026.Vol22.Iss2.61370