Biosynthesis and antibiotic activity of silver nanoparticles using different sources: Glass industrial sewage‐adapted Bacillus sp. and herbaceous Amaranthus sp

Abstract

Synergistic effects of metallic nanoparticles (NPs) with commonly used antibiotics have encouraged the exploration of novel biological entities, including bacteria and weed plants. The present study for the first time reports the capability of an extracellular fraction of Bacillus sp. isolated from effluents of a glass‐manufacturing unit to biosynthesis silver nanoparticles (AgNPs) without hazardous materials. Besides, the biosynthesis of AgNPs using an aqueous extract of herbaceous weed plant (Amaranthus sp.), as a low‐cost natural source, has been addressed in this study. Our findings confirmed the fabrication of microbial and plant‐sourced AgNPs, being thoroughly characterized by UV–vis, transmission electron microscopy, X‐ray diffraction, dynamic light scattering, energy dispersive X‐ray spectroscopy, and zeta potential measurements. Further, biological activities of the plant‐ and bacterium‐derived AgNPs were investigated against several pathogenic bacteria, in combination with streptomycin. The antibacterial effectiveness of the antibiotic coated with 400 µg/disk of AgNPs increased over 50% toward all the pathogenic bacteria. The data presented here demonstrate that both industrial wastewater‐adapted Bacillus sp. and wild‐growing Amaranthus sp. are efficient natural sources with excellent capabilities for creating biologically active AgNPs, which would be of considerable interest for circumventing bacterial resistance to current antibiotics.

Evaluation of the antimicrobial activity of silver nanoparticles biosynthesized from the aqueous extract of Schinus terebinthifolius Raddi leaves

“…This result was higher than that obtained from the TEM analysis. Similar results were also obtained in previous studies reported by Bahrami‐Teimoori et al 20 . and Bharathi et al.…”

“…This result was higher than that obtained from the TEM analysis. Similar results were also obtained in previous studies reported by Bahrami-Teimoori et al 20 and Bharathi et al for biosynthesized AgNPs. 59 According to the literature, this size difference that was observed between the results is probably related to the fact that the size of NPs in dried form is evaluated by TEM, whereas the DLS analysis measures the hydrodynamic radius of particles, which can result in an overestimation of particle size.…”

“…13 The nanoparticle synthesis process encompasses the production strategies top-down, bottom-up, and green synthesis. 14,15 Among them, green synthesis comprises a methodology that uses plant biological resources, [16][17][18][19] microorganisms, 20 and biomolecules 21 as metal salt reducing and stabilizing agents to produce nanoparticles. This approach is less toxic, simple, fast, and low-cost and has greater biological potential in relation to other techniques.…”

Metallic and non-metallic nanoparticles from plant, animal, and fisheries wastes: potential and valorization for application in agriculture

“…Srivastava and Mukhopadhyay ( 2013 ) described selenium nanostructures’ biosynthesis from selenium oxyanions by using the bacteria Zooglea ramigera . Bahrami-Teimoori et al ( 2019 ) has demonstrated that both natural sources; industrial wastewater-acclimated Bacillus sp. and wild-growing Amaranthus sp.…”

New aspects of lipopeptide-incorporated nanoparticle synthesis and recent advancements in biomedical and environmental sciences: a review

“…27 Currently, lipopeptide-mediated nanomaterial synthesis has been used as an alternative material for implementation in research as antibiotic agents. 31,32 The effects of green nanoparticles have shown influence in bactericidal against Grampositive/negative bacteria and, fungal pathogens and gene therapy applications, 33 however, most of the researchers have recommended the use of Gram-positive bacteria to produce the lipopeptides biosurfactants. 34 Additionally, low toxicity and more biodegradability of lipopeptide biosurfactant-mediated nanomaterial synthesis have established eco-friendly materials with core effectiveness in the research and development sector.…”