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-Abstract
THIS RESEARCH article describes a strong approach for the green synthesis of silver nanoparticles (AgNPs) that employs a local black seed honey (BSH). Honey was chosen as the eco-friendly reducing and stabilizing agent replacing most reported reducing agents which represent highly biological risk to the society and environment. Honey reduced silver ions into AgNPs after 20min in a stirred reaction mixture. Nanoparticles of different sizes were obtained, and the solution turned black over time. The antibacterial activity of AgNPs was investigated against eight pathogenic bacterial strains; five Gram-negative and three Gram-positive. AgNPs were potentially effective against the Gram-negative more than Gram-positive bacterial strains. E. coli and P. aeruginosa were the highly susceptible strains with 6.3μg/ml minimum inhibitory concentrations (MICs). The AgNPs were characterized by perform UV-visible spectroscopy, fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) imaging. The colloid obtained at a pH of 9 was found to be spherical in shape and was distributed with a certain amount of agglomeration. An intense surface plasmon resonance band at 400nm in the UV-visible spectrum clearly revealed the formation of AgNPs after 72hr. TEM showed spherically shaped AgNPs, and the sizes of the nanoparticles ranged from 25-70nm. AgNPs had broad spectrum antibacterial property thus it can be explored further for medical and therapeutic applications.
DOI
10.21608/ejbo.2019.6597.1261
Keywords
Black seed honey (BSH), Green synthesis, Characterization of silver nanoparticles, Pathogenic strains, Antibacterial activity
Authors
Affiliation
Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
Email
aminghada66@gmail.com
City
-Orcid
-Affiliation
Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
Email
aliaa_elborai2007@yahoo.com
Orcid
-Affiliation
Botany and Microbiology Department, Faculty of Science, Alexandria University, Alexandria, Egypt
Email
maii.mahfouzz@gmail.com
City
-Orcid
-Link
https://ejbo.journals.ekb.eg/article_31621.html
Detail API
https://ejbo.journals.ekb.eg/service?article_code=31621
Publication Title
Egyptian Journal of Botany
Publication Link
https://ejbo.journals.ekb.eg/
MainTitle
Eco-Friendly Green Synthesis of Silver Nanoparticles from Egyptian Honey: Evaluating its Antibacterial Activities