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The Antimicrobial Effect Of Some Essential Oils Potentiated With Selenium Compounds Against Some Gastrointestinal-Tract Bacteria Ahmed Abdelaal Sayed Hussein ; Mohammed Ezz Eldin Abdelhaleem , Sherif Mohammad Elnagdy , Doaa Mohammad Abdelatty Ghaith

By: Contributor(s): Material type: TextTextPublication details: 2021.Content type:
  • text
Media type:
  • Unmediated
Carrier type:
  • volume
Subject(s): DDC classification:
  • 580
Dissertation note: Thesis (M.Sc.)-Cairo University - Faculty of Science- Department of Botany and Microbiology Summary: In this study, we aimed to assess the antibacterial activity of some essential oils potentiated with selenium compounds against some multi-drug resistant gastrointestinal tract bacteria. Bacterial isolates of Escherichia coli, Klebsiella spp, Proteus spp, Citrobacter spp, Salmonella spp, and Staphylococcus aureus were selected from thirty-three pure stool cultures based on the antibiotic resistance activity. The study was conducted at the Laboratory of Microbiology, Faculty of Medicine, Cairo University. Thirteen essential oils were tested for their antibacterial effect against the selected isolates alone and in combination with either antibiotics or sodium selenite compound (1% w/v). Results revealed that Cinnamomum verum had the strongest effect on all selected isolates. The efficacy of used antibiotics increased when combined with effective essential oils. Sodium selenite had no antibacterial effect against all bacterial isolated individually or in combination with essential oils (C. verum, Syzygium aromaticum, and Carum carvi) except against S. aureus which was inhibited. Transmission electron microscope (TEM) scanning for the bacterial cells showed the cell wall disintegration and the plasma membrane lysis when treated with C. verum
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.12.05.Ph.D.2021.Ah.A (Browse shelf(Opens below)) Not for loan 01010110086462000

Thesis (M.Sc.)-Cairo University - Faculty of Science- Department of Botany and Microbiology

Bibliography: p. 131-156.

In this study, we aimed to assess the antibacterial activity of some essential oils potentiated with selenium compounds against some multi-drug resistant gastrointestinal tract bacteria. Bacterial isolates of Escherichia coli, Klebsiella spp, Proteus spp, Citrobacter spp, Salmonella spp, and Staphylococcus aureus were selected from thirty-three pure stool cultures based on the antibiotic resistance activity. The study was conducted at the Laboratory of Microbiology, Faculty of Medicine, Cairo University. Thirteen essential oils were tested for their antibacterial effect against the selected isolates alone and in combination with either antibiotics or sodium selenite compound (1% w/v). Results revealed that Cinnamomum verum had the strongest effect on all selected isolates. The efficacy of used antibiotics increased when combined with effective essential oils. Sodium selenite had no antibacterial effect against all bacterial isolated individually or in combination with essential oils (C. verum, Syzygium aromaticum, and Carum carvi) except against S. aureus which was inhibited. Transmission electron microscope (TEM) scanning for the bacterial cells showed the cell wall disintegration and the plasma membrane lysis when treated with C. verum

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