Modification of diatom using silver nanoparticle to improve antimicrobial activity

[Display omitted] Marine microalgae (Diatoms, DE) acting as a cost-effective natural source of silicon have been used in a large variety of applications in several biotechnology sectors. Adding silver nanoparticles onto the diatom surface, could be motivated to obtain Ag-DE/NPs. Marine algae derivat...

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Published inMaterials today : proceedings Vol. 43; pp. 3369 - 3374
Main Authors Sherief, Marwa A., El-Bassyouni, Gehan T., Gamal, Amira A., Esawy, Mona A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2021
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Abstract [Display omitted] Marine microalgae (Diatoms, DE) acting as a cost-effective natural source of silicon have been used in a large variety of applications in several biotechnology sectors. Adding silver nanoparticles onto the diatom surface, could be motivated to obtain Ag-DE/NPs. Marine algae derivatives are promising as innovative applicants in antibacterial drug discovery. The antibacterial activity of the diatom (DE) collected from Alfayoum-Egypt and the silver diatom nanoparticles (Ag-DE/NPs) were synthesized through the reaction of Tollens’ reagent, by which silver particles were consistently deposited on the surface of diatomite and examined against five microorganisms. The physio-chemical properties of both DE and (Ag-DE/NPs) were characterized using XRD analysis, SEM/EDX and surface area. The current study was designed to examine the efficiency of DE & Ag-DE/NPs against pathogenic microorganisms. Our study highlighted that the antimicrobial activity of (Ag-DE/NPs) is greater than the antibacterial activity of DE. The cytotoxicity results revealed that DE and Ag-DE/NPs had no toxic effect on normal cells and could be used safely in solving antibiotic resistant strains.
AbstractList [Display omitted] Marine microalgae (Diatoms, DE) acting as a cost-effective natural source of silicon have been used in a large variety of applications in several biotechnology sectors. Adding silver nanoparticles onto the diatom surface, could be motivated to obtain Ag-DE/NPs. Marine algae derivatives are promising as innovative applicants in antibacterial drug discovery. The antibacterial activity of the diatom (DE) collected from Alfayoum-Egypt and the silver diatom nanoparticles (Ag-DE/NPs) were synthesized through the reaction of Tollens’ reagent, by which silver particles were consistently deposited on the surface of diatomite and examined against five microorganisms. The physio-chemical properties of both DE and (Ag-DE/NPs) were characterized using XRD analysis, SEM/EDX and surface area. The current study was designed to examine the efficiency of DE & Ag-DE/NPs against pathogenic microorganisms. Our study highlighted that the antimicrobial activity of (Ag-DE/NPs) is greater than the antibacterial activity of DE. The cytotoxicity results revealed that DE and Ag-DE/NPs had no toxic effect on normal cells and could be used safely in solving antibiotic resistant strains.
Author Sherief, Marwa A.
Gamal, Amira A.
Esawy, Mona A.
El-Bassyouni, Gehan T.
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  organization: Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries Research Division, National Research Centre, 33 El-Buhouth St., Dokki, Cairo 12622, Egypt
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Keywords Silver Nanoparticles
Marine microalgae
Antimicrobial activity
Diatoms
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Snippet [Display omitted] Marine microalgae (Diatoms, DE) acting as a cost-effective natural source of silicon have been used in a large variety of applications in...
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SubjectTerms Antimicrobial activity
Diatoms
Marine microalgae
Silver Nanoparticles
Title Modification of diatom using silver nanoparticle to improve antimicrobial activity
URI https://dx.doi.org/10.1016/j.matpr.2020.05.391
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