ACE Journal of Research Studies in Biosciences

  • ISSN Print: 2520-3916, ISSN Online:
  • Start Year: 2021
  • Volume: 3 (2023), Issue: 1

Study of the Effect of Aqueous Extracts of Eucalyptus Camaldulensis in Inhibiting the Growth of Bacteria Isolated From Euphrates River Water

Author: Shirin Yasin Bdewi
Page: 7-10
Published online: 17 Nov 2023


Eucalyptus is an evergreen tree that is often used for its therapeutic benefits. Although native to Australia, this popular tree now flourishes in many places of the world. It has lengthy stems and long oval leaves that are difficult to digest if eaten whole. However, eucalyptus leaves can be turned into a tea that is safe to drink. Additionally, the leaves can be turned into an essential oil for topical application or inhalation. Methodology diffusion in the pits was employed to investigate the effect of plant extracts on the growth of the isolated bacteria. Inoculate Muller Hinton solid medium with bacterial suspension containing 1.5108 cells mL (via sterile cotton swab). Borer corks were used to make small holes in the surface of the culture medium and distilled water was used to ensure that it did not have an inhibiting impact on the growth of bacteria. The dishes were kept at room temperature for twenty min. Finally, three replicates of each isolate were cultured at 37BC for 24 hrs. Result the effect of eucalyptus leaf extract on inhibiting the growth of bacteria isolated from the water of the Euphrates River. Coliform and Klebsiella bacteria were isolated from the water of the Euphrates River. Several concentrations of the water extract of the eucalyptus plant were used 30‐60% and 90% which gave a concentration of 90% of the extract. The plant water had the highest inhibition for both types of bacteria, where the area of the inhibitory region for coliform bacteria was 22 mm, while the area of the inhibitory region for Klebsiella bacteria was 24 mm. Aqueous extracts of Eucalyptus camaldulensis, coliform bacteria.