Abstract
An eco‐friendly and low‐cost method for synthesizing and capping silver nanoparticles with aqueous extracts of apricot and currant wastes is reported. The chemical profiles of the extracts were analysed using liquid chromatography‐mass spectrometry (LC‐MS). Total phenolic content and total flavonoid content of extracts were determined. The antioxidant activity of the synthesized nanoparticles was evaluated by DPPH (1,1‐diphenyl‐2‐picrylhydrazyl) power assays. Cyclic voltammetry study was performed to determine the reducing ability of the aqueous extract of the black currant and apricot pomaces. Characterization of AgNPs was carried out using energy‐dispersive X‐ray spectroscopy (EDS), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and UV‐visible spectroscopy. Zeta potential of obtained colloidal solutions varies from −33.41 to −24.23 mV indicating the moderate stability of synthesized nanoparticles. The synthesized nanoparticles efficiently demonstrated a bactericide effect on Escherichia coli.
Highlights
One of the key trends in the development of the modern field of nanotechnology is the concept of environmental safety and the introduction of “green” technologies [1,2,3,4]
Silver nanoparticles were synthesized by the reduction of silver ions with the black currant and apricot pomace aqueous extracts
Detailed gas chromatography-mass spectrometry (LC-MS) results established that polyphenols were present in the extracts (34–60%) and could serve as reducing agents in synthesis
Summary
One of the key trends in the development of the modern field of nanotechnology is the concept of environmental safety and the introduction of “green” technologies [1,2,3,4]. A fundamental key to the strategy of the “green” synthesis of metal nanoparticles is the use of low-cost, environmentally friendly, and renewable materials. “Green”/biogenic/phytochemical synthesis or biosynthesis of metallic nanoparticles is known to be a simple, ecological, cost-effective, cheap technique and is much safer for humans as compared to the conventional physical, chemical, and electrochemical methods [5,6,7,8,9]. Extracts of various parts of plants such as root, seeds, leaves, stem, and flower have been used for the synthesis of metallic nanoparticles. Plants extracts from biomass of Ocimum tenuiflorum, Solanum trilobatum, Syzygium cumini, Centella asiatica, and Citrus sinensis were used for the synthesis of silver nanoparticles (AgNPs) with antibacterial properties [18].
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