Rapid biological synthesis of silver nanoparticles using plant leaf extracts

Abstract

Five plant leaf extracts (Pine, Persimmon, Ginkgo, Magnolia and Platanus) were used and compared for their extracellular synthesis of metallic silver nanoparticles. Stable silver nanoparticles were formed by treating aqueous solution of AgNO(3) with the plant leaf extracts as reducing agent of Ag(+) to Ag(0). UV-visible spectroscopy was used to monitor the quantitative formation of silver nanoparticles. Magnolia leaf broth was the best reducing agent in terms of synthesis rate and conversion to silver nanoparticles. Only 11 min was required for more than 90% conversion at the reaction temperature of 95 degrees C using Magnolia leaf broth. The synthesized silver nanoparticles were characterized with inductively coupled plasma spectrometry (ICP), energy dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and particle analyzer. The average particle size ranged from 15 to 500 nm. The particle size could be controlled by changing the reaction temperature, leaf broth concentration and AgNO(3) concentration. This environmentally friendly method of biological silver nanoparticles production provides rates of synthesis faster or comparable to those of chemical methods and can potentially be used in various human contacting areas such as cosmetics, foods and medical applications.

Novel Biogenic Synthesis of Agnps From Seed Extract of Eugenia Uniflora L.: In Vitro Assessment of Their Antioxidant, Antimicrobial and Cytotoxic Potential

“…These processes involve several toxic chemicals as reducing agents. Because of using noble metal nanoparticles in areas of human contact 3 , there is an emergent need to develop eco-friendly biosynthesis processes that hinders the use of toxic chemicals. Recently, bio-green method using medicinal plant extract has gained the unique importance due to non-toxic and less time requirement in the synthesis of nanoparticles.…”

Synthesis of silver nanoparticles using leaves of Catharanthus roseus Linn. G. Don and their antiplasmodial activities

“…The research on synthesized nanomaterials and their characterization is an emerging field of nanotechnology from the past two decades, due to their huge applications in the fields of physics, chemistry, biology and medicine [3] . Many techniques of synthesizing silver nanoparticles, such as chemical reduction of silver ions in aqueous solutions with or without stabilizing agents [4] , thermal decomposition in organic solvents [5] , chemical reduction and photoreduction in reverse micelles [6,7] , and radiation chemical reduction [8][9][10] have been reported in the literature.…”

Cytotoxic Activity of Biosynthesized Gold Nanoparticles with an Extract of the Red Seaweed Corallina officinalis on the MCF-7 Human Breast Cancer Cell Line

“…Algae are otherwise called bionanofactories because they synthesized nanoparticles with high stability, are easy to handle, and eliminate cell maintenance (Song and Kim, 2009). Recently, gold nanoparticle synthesized using the extract of seaweeds such as Sargassum wightii (Singaravelu et al, 2007), Turbinaria conoides (Vijayaraghavan et al, 2011), Laminaria japonica (Ghodake and Lee, 2011), and Stoechospermum marginatum (Rajathi et al, 2012) was reported.…”