Extracellular synthesis of silver nanoparticles using living peanut seedling

Abstract

Synthesis of nanoparticles by environment friendly method is an important aspect of nanotechnology. In the present study, extracellular reduction of silver ions to silver nanoparticles was carried out using living peanut plant. The electron microscopic analysis shows that the formed nanoparticles were of different shapes and sizes. The formed nanoparticles were polydispersed. The shapes of the nanoparticles were spherical, square, triangle, hexagonal and rod. Most of the particles were spherical and 56 nm in size. EDS analysis confirmed the formed nanoparticles were of silver. The crystalline nature of nanoparticles was confirmed by diffraction. This method opens up an exciting possibility of plant-based synthesis of other inorganic nanomaterials. This study confirms the synthesis of extracellular silver nanoparticles by living plant.

Biogenic synthesis of silver nanoparticles using guava (Psidium guajava) leaf extract and its antibacterial activity against Pseudomonas aeruginosa

“…It may be noted that average particle size estimated was 40 nm, and particle size ranges from 10 to 90 nm. The size of these biosynthesized Ag nanoparticles are in conformity with the size of earlier reported biosynthesized Ag nanoparticles using the leaf of Coleus aromaticus, 40-50 nm (Vanaja and Annadurai 2013), using living peanut seedling, 30-100 nm (Raju et al 2014), using leaf extract Petroselinum crispum, 30-32 nm (Roy et al 2014), using Justicia adhatoda L Leaf, 5-50 nm (Bose and Chatterjee 2015), etc.…”

“…Recently, the plant-mediated synthesis of silver nanoparticles using Coleus aromaticus leaf (Vanaja and Annadurai 2013), living peanut seedling (Raju et al 2014), Petroselinum crispum leaf (Roy et al 2014), Citrus limon leaf (Vankar and Shukla 2012), Avicennia marina mangrove plant leaf, bark and root (Gnanadesigan et al 2012) and Justicia adhatoda L. Leaf (Bose and Chatterjee 2015) have been reported.…”

Electrospun PCL membranes incorporated with biosynthesized silver nanoparticles as antibacterial wound dressings

“…Biosynthesis of silver nanoparticles using plant resources is an eco-friendly, reliable approach and is suitable for large-scale production of nanoparticles (Vanaja and Annadurai 2013;Selvam and Sivakumar 2014). Since no chemical reagents are used in biosynthesis, it is environmentally safe and has potential for biological applications (Paul et al 2015;Gaddala and Nataru 2015;Raju et al 2014;Shanmugam et al 2014;Kannan et al 2013;Kandasamy et al 2013). Biosynthesized nanoparticles are more acceptable in medical applications due to more biocompatibility than chemically synthesized ones (Sundaram et al 2012).…”

Exogenous Production of Silver Nanoparticles by Tephrosia apollinea Living Plants under Drought Stress and Their Antimicrobial Activities

“…The synthesis of NPs is dependent upon chemicalor physical-based methods that are expensive and require harmful chemicals despite their efficiency [4]. In addition, these methodologies require harsh environments for the synthesis reaction to occur, including extremes of temperature, pressure, and pH [5].…”