Green synthesis and characterization of silver nanoparticles produced using Arbutus Unedo leaf extract

Abstract

Metallic nanoparticles have received great attention from chemists, physicists, biologists and engineers who wish to use them for the development of a new generation of nanodevices. In the present study silver nano-particles were synthesized from aqueous silver nitrate through a simple and eco-friendly route using leaf broth of Arbutus unedo, which acted as a reductant and stabilizer simultaneously. The aqueous silver ions when exposed to the leaf broth were reduced and stabilized over long periods of time resulting in the green synthesis of surface functionalized silver nanoparticles. The bio-reduced silver nanoparticles were appropriately characterized. The results revealed the formation of single crystalline Ag nanoparticles with a nar-row size distribution for each sample. The particles, although discrete, were predominately coated with the organic leaf extract forming small aggregates, which makes them stable over long time periods and highly appropriate for coatings or biotechnology applications.

Photobiological synthesis of noble metal nanoparticles using Hydrocotyle asiatica and application as catalyst for the photodegradation of cationic dyes

“…However, in alkaline pH ([9) the intensity of SPR band increases appreciably with a blue shift. This trend is reported earlier also signifying the formation of large amount of AgNPs and the blue shift is attributed to formation of small-sized nanoparticles [17].…”

“…Recently, several plants extracts such as Annona squamosa [16], Arbutus unedo [17], Cassia angustifolia [18] and many others [19][20][21][22][23][24][25][26][27] have been used to synthesize silver (Ag) and gold (Au) nanoparticles (NPs). However, these natural sources, which have active ingredients, produce nanoparticles at slower rate.…”

Green synthesis, antimicrobial and cytotoxic effects of silver nanoparticles using Eucalyptus chapmaniana leaves extract

“…It is cost effective, environmental friendly, easily scaled up for large scale synthesis. In this method there is no need to use high pressure, energy, temperature and toxic chemical that may have adverse effect in the medical applications [14][15][16] .…”

The Effect of Silver Nanoparticles Size, Produced Using Plant Extract from Arbutus Unedo, on Their Antibacterial Efficacy

“…Two variations of silver nanoparticles, named as NP1 and NP2, were synthesized by an eco-friendly route, exploiting the high reduction power that leaf extracts offer [12,16]. Through this, a minimum use of chemicals (just AgNO3) is required, minimizing the environmental impact that conventional silver nanoparticles possess (Ribeiro et al 2014).…”

“…Based on a previous work of one of the coauthors group, presenting the synthesis of silver nanoparticles (AgNPs) produced using the leaf extract of the plant Arbutus Unedo (LEA) as a reducing agent [12], we aim to extend the advantages of this low-cost and environmentally friendly method for the production of AgNPs, and present here the development of two new products, silver nanoparticles variation 1 (NP1) and variation 2 (NP2) which are produced by varying the amount of LEA in the synthesis and leading to different size and size distribution of the products. We investigate for the first time the antibacterial efficacy of NP1 and NP2 applying them against four bacterial strains, which are relevant for biomedical applications, aiming to gain a better insight into the complex action of AgNPs on bacterial cells, and with the perspective to incorporate them into antibacterial biomaterials scaffolds for tissue regeneration.…”