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Browsing Theses and Dissertations by Author "Dib, Robert, Ph.D."

Browsing Theses and Dissertations by Author "Dib, Robert, Ph.D."

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  • Nader, Ingrid (Notre Dame University-Louaize, 2021)
    Candida albicans, is usually a harmless fungus in healthy individuals, but life-threatening when found in large quantities or in inappropriate parts of the body. It developed resistance against the antifungal drugs fluconazole and amphotericin B, used in an abusive way, by adopting different mechanisms. Medicinal plants, which offer a wide variety of secondary metabolites, especially saponins, have been reported for their large biological activities. These phytochemicals are composed of a hydrophobic part (aglycone) and a hydrophilic one (glycone), which, based on their aglycone part, are ...
  • Ghosn, Marc (Notre Dame University-Louaize, 2020-07)
    An extraction protocol for saponins of Styrax Officinalis plant was adopted, modified and successfully applied. The extract obtained was tested by stabilizing Oil-in-Water emulsions. Ethanol extraction and successful one-step partial purification using AB-8 adsorption column chromatography yielded positive colorimetric (Vanillin – Sulfuric Acid) TLC results. The 3D structure of the four Styrax Officinalis saponins reported in the literature were rendered for the first time, and their partitioning properties exclusively acquired using Marvin Sketch chemical drawing software. 10% w/w Sunflower Oil ...

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