Abstract
Interest in silver nanoparticles (AgNPs) has recently increased due to their extensive and varied use, the biological synthesis of synthesis of AgNPs being safer than other approaches. The Kingdom of Saudi Arabia is one of the biggest producers of date palm, leading to the production of large amounts of waste date seeds. Here, the study evaluatesthe use of date seeds extract in the biosynthesis of AgNPs and to evaluate the antibacterial effect of the resultant nanoparticles (NPs) against pathogenic bacteria. A number of which were used here in order to characterize the synthesized particles, including UV-Vis absorption spectroscopy, transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). The results show that date seed extract can be used to synthesize AgNPs effectively. These AgNPs exhibit unique, small-size morphologies which proved to be antibacterial against pathogenic bacteria including Staphylococcus aureus, S. epidermidis, and Escherichia coli.
Highlights
Silver nanoparticles have been applied widely in numerous fields, including agriculture, biosensing, catalysis, dentistry, drug delivery, electronics, food technology medicine, photography, tissues imaging, optics, solar energy coatings and electronics[1,2,3].The antimicrobial properties of AgNPs, encompass antibacterial, antifungal, antiparasitic, and antiviral activity[4,5,6,7,8,9,10,11]
Visual observation of biosynthesis A color change from light brown to dark brown was observed when the date seed extract was added to the silver nitrate solution Fig. 1
Energy dispersive spectroscopy was used to analyze the composition of AgNPs
Summary
Silver nanoparticles have been applied widely in numerous fields, including agriculture, biosensing, catalysis, dentistry, drug delivery, electronics, food technology medicine, photography, tissues imaging, optics, solar energy coatings and electronics[1,2,3].The antimicrobial properties of AgNPs, encompass antibacterial, antifungal, antiparasitic, and antiviral activity[4,5,6,7,8,9,10,11]. Date palm (Phoenix dactylifera) has been grown in the Arab world over the last 6,000 years[12]. It belongs to the Arecaceae family, which includes about 200 genera containing some 3,000 species[13]. Seeds of the date palm fruits contain numerous essential biocompounds including fibers, sugars, fatty acids, protein, vitamins, ash, and minerals, as well as large
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