Rapid Green Synthesis and Characterization of Silver Nanoparticles Arbitrated by Curcumin in an Alkaline Medium

Muhammad Khan,Kamyar Shameli,Suriya Kumari,Jinap Selamat,Awis Sazili

doi:10.3390/molecules24040719

Abstract

Green synthesis of silver nanoparticles is desirable practice. It is not only the required technique for industrial and biomedical purposes but also a promising research area. The aim of this study was to synthesize green curcumin silver nanoparticles (C-Ag NPs). The synthesis of C-Ag NPs was achieved by reduction of the silver nitrate (AgNO3) in an alkaline medium. The characterizations of the prepared samples were conducted by ultraviolet visible (UV-vis) spectroscopy, powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and zeta potential (ZP) analyses. The formation of C-Ag NPs was evaluated by the dark color of the colloidal solutions and UV-vis spectra, with 445 nm as the maximum. The size of the crystalline nanoparticles, recorded as 12.6 ± 3.8nm, was confirmed by HRTEM, while the face-centered cubic (fcc) crystallographic structure was confirmed by PXRD and SAED. It is assumed that green synthesized curcumin silver nanoparticles (C-Ag NPs) can be efficiently utilized as a strong antimicrobial substance for food and meat preservation due to their homogeneous nature and small size.

Highlights

Nanotechnology is the utilization of nanoparticles for biological, medical, and processing purposes
We reported the rapid green synthesis of curcumin silver nanoparticles (C-Ag NPs) in an alkaline medium which can be considered green, eco-friendly and safe for producing nanoparticles as an antibacterial substance for food processing
Curcumin silver nanoparticles were successfully synthesized by a green method in an alkaline medium with a pH of 9.92

Summary

Introduction

Nanotechnology is the utilization of nanoparticles for biological, medical, and processing purposes. The utilization of nanoparticles has been increased in food packaging, coatings, pharmaceutical utilization, and biological tagging [3,4]. Silver nanoparticles (Ag NPs), have gained the attention of researchers and scientists due to their wide range of applications as antimicrobial, antifungal, antioxidant, anticancer, and anti-inflammatory agents [5,6,7,8]. Ag NPs can tolerate a high temperature range with very low volatility as compared to other nanoparticles [9], and can restrain the growth of micro organisms following initial contact with them [10]. Active packaging includes the incorporation of nanoparticles (Ag, Zn, Mg, etc.) into edible films to inhibit the growth of targeted microbes for long -term preservation [11].

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