Antimicrobial activities of silver nanoparticles synthesized from Lycopersicon esculentum extract

Abstract

Background: It has been known for quite some time now that silver nanoparticles (AgNP) can inhibit microbial growth and even kill microbes. Our investigation reports the antimicrobial activity of AgNP against a model bacterium, Escherichia coli.

An experiment-based model quantifying antimicrobial activity of silver nanoparticles onEscherichia coli

“…13,53,54 The OD 600 value of this sample reached its asymptotic value before 30 hours (Fig. 2B), while the asymptotic value was similar to that of the wild type and the samples with AgNPs at lower concentrations (Fig.…”

“…† These observations are consistent with most previous reports. 2,12,13,24 It is noted that the OD 600 reading of the growth medium was enhanced by the addition of AgNPs ( Fig. 2A and 2B).…”

“…2,3,9,10,13,15,18,20,24,[47][48][49][50][51] In the kinetic growth assays, the concentrations of bacteria in the liquid cultures (i.e., OD 600 ) were monitored. In the rst 12 hours (with an initial OD 600 ¼ 0.05), AgNPs at 40 mg mL À1 were able to completely suppress the growth of the E. coli ( Fig.…”

Phytofabrication of silver nanoparticles using Myriostachya wightiana as a novel bioresource, and evaluation of their biological activities

“…It is now established that the plants and plant materials act as excellent reducing agents that catalyze bulk materials into nano form.Biological methods of nanoparticles production are regarded as safe, cost-effective, sustainable and environment friendly. Several biological systems including bacteria, fungi, algae and plants have been used in the synthesis of AgNPs [ 5,6,7,8 ].Nanoparticles produced by these methods have protective bio-capping around them, rendering the particles to be stable with no aggregation [ 9 ]. Synthesis of inorganic nanoparticles by biological systems makes nanoparticles more biocompatible and environmentally benign [ 10 ].…”

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“…Moreover, the nanosilveris increasing the involvement in the field of food industry due its strong antimicrobial efficacy against the bacteria and microorganisms owing to attachment with the cells surface of microorganism which breaks the permeability, respiration function of cells [19], also used as in different consumer products such as deodorants, clothing, bandages, cleaning solutions and as antimicrobial agents [20]. Nanosilver can be produced either intra or extra-cellularly by using biological routes.…”