International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Call for Papers | Fully Refereed | Open Access | Double Blind Peer Reviewed

ISSN: 2319-7064


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Research Paper | Anthropology Science | Libya | Volume 11 Issue 2, February 2022 | Rating: 5.1 / 10


Antimicrobial Activity of Some Plant Extracts against Some Bacterial Strains

Ehab Awad Rahim Awad | Taffaha A. Arhouma [2] | Tamannouha I. Saaed Saad


Abstract: The research aimed to study the inhibitory effect of alcoholic extracts (ethanol) of some plants on the growth of some bacteria, where Four types of bacteria were selected to test their sensitivity against the extracts and compare them with the antibiotic sensitivity test for them so that alternatives to plant extracts can be found, reduce human resistance to treatments and find alternative treatments Safe and cheap, as two types of Gram-positive bacteria were selected Staphylococcus epidermids, Staphylococcus aureus and two types of Gram-negative bacteria Escherichia coli, Proteus mirabilis. Selected from plants (Juniperus phoenicea, Salvia rosmarinus, Thymus serpyllum, Allium sativum). Sensitivity test was conducted by tablet method, where the tablets were saturated with plant extracts and tested. The results of the extracts showed a clear discrepancy in their effect on bacteria, as they had the strongest effect on Gram-positive bacteria, as Gram-positive bacteria were affected by the four types of extracts, while Gram-negative bacteria had the effect in only three types, and the extract that gave the highest anti-bacterial area was Juniperusphoenicea. Between 12-13 mm on positive bacteria. Also, the sensitivity of S. epidermidis to extracts was the highest, followed by S. aureus, then P. mirabilis, and finally E. coli was the least effective for the extracts. Also used antibiotics following vital to test the susceptibility with bacteria (Erythromycin 30m cg, Gentamicin 10m cg, Amoxillin / calvulanic acid 20/10, levofloxacin 5m cg, Ciprofloxacin 5m cg) has had a significant impact on the bacteria except (Amoxicilin) where he did not give effect to S. aureus, S. epidermidis, E. coli, and its effect was limited to P. mirabilis.


Keywords: plant extracts, antibiotics, gram-positive bacteria, gram-negative bacteria


Edition: Volume 11 Issue 2, February 2022,


Pages: 460 - 465


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