TAILIEUCHUNG - Biogenic production of silver nanoparticles by Enterobacter cloacae Ism26

A bacterial isolate capable of tolerating 30 mM silver nitrate (AgNO3) was recovered from soil contaminated with industrial waste. The isolate was identified by 16S rRNA as Enterobacter cloacae Ism26 (KP988024) and its capability to synthesize silver nanoparticles (AgNPs) was investigated. | Turkish Journal of Biology Turk J Biol (2018) 42: 319-328 © TÜBİTAK doi: Research Article Biogenic production of silver nanoparticles by Enterobacter cloacae Ism26 1, 1 1 2 Khaled Z. EL-BAGHDADY * , Einas H. EL-SHATOURY , Omnia M. ABDULLAH , Mostafa . KHALIL 1 Department of Microbiology, Faculty of Science, Ain Shams University, Cairo, Egypt 2 Department of Chemistry, Faculty of Science, Ain Shams University, Cairo, Egypt Received: Accepted/Published Online: Final Version: Abstract: A bacterial isolate capable of tolerating 30 mM silver nitrate (AgNO3) was recovered from soil contaminated with industrial waste. The isolate was identified by 16S rRNA as Enterobacter cloacae Ism26 (KP988024) and its capability to synthesize silver nanoparticles (AgNPs) was investigated. AgNPs were produced by mixing 1 mM AgNO3 solution with bacterial cell lysate under light conditions. The UV-Vis spectrum of the aqueous medium containing AgNPs exhibited a peak at 440 nm corresponding to the surface plasmon resonance of the AgNPs. The crystalline nature of the particles was confirmed by X-ray diffractometer. High-resolution transmission electron microscopy revealed that the AgNPs were spherical and well dispersed and ranged in size from 7 to 25 nm. The average size range of the produced AgNPs was confirmed by dynamic light scattering. Fourier transform infrared spectroscopy revealed possible involvement of reductive groups on the surface of the nanoparticles. The biosynthesized AgNPs were stable for 6 months and inhibited both gram-positive and gram-negative bacteria. This work describes the exploitation of a low-cost biomaterial and an easy method for the synthesis of AgNPs with desirable and advantageous characteristics. Key words: Silver nanoparticles, light, antibacterial, Enterobacter 1. Introduction Synthesis of metal nanoparticles is an emerging area of nanoscience and

• Sinh học
• Silver nanoparticles
• Biogenic production
• Synthesis of metal nanoparticles
• Gram negative bacteria
• Geobacter sulfurreducens
• Biosynthesis and characterization
• Characterization of silver nanoparticles
• Confirmed the synthesis of AgNPs
• Journal of Chemistry
• Fabrication of silver nanoparticles embedded polymer masterbatchs
• Excellent antibacterial performance
• Silver nanoparticles embedded polymer masterbatchs
• The silver nanoparticlesembedded polyethylene
• Gram negative Escherichia Coli
• Physiochemical properties
• Silver nanoparticles induced cytotoxicity
• Physicochemical properties
• Aggregation interaction
• Acinetobacter indicus
• Biomedical applications
• Biogenic synthesis
• Silver nanoparticles mediated
• Antimicrobial activity
• Pleurotus florida
• Their antimicrobial activity
• Silver nanoparticles from pleurotus florida
• Antibacterial activity
• Antibacterial activity of silver nanoparticles
• Antimicrobial agents could overcome mechanisms
• Quorum sensing
• Biosynthesised silver nanoparticles
• Achyranthes aspera
• Achyranthes aspera roots
• Maintaining different AgNO3 concentrations
• Bacillus sp DRI 6
• Biosynthesis of silver nanoparticles
• Medical sciences
• Citrus fruit peel extracts
• Synthesis of silver nanoparticles
• Different citrus fruit peel extracts
• Education research
• Antibacterial application against bacillus subtilis
• Pseudomonas aeruginosa
• Chemical synthesis
• Phaseolus vulgaris L
• Copper nanoparticles
• In vivo
• Copper nanoparticles on physiological characteristics
• Trichoderma asperellum
• Physiological effects
• Camellia sinensis L
• Seed quality parameters
• Biosynthesized silver nanoparticles
• Gymnema sylvestre
• Antimicrobial activity (Fungi and Bacteria)
• Antimicrobial activities
• Green synthesis
• Silver fused azadirachta indica nanoparticles
• Producing staphylococcus aureus
• Green conjugates of silver nanoparticles
• Turkish Journal of Chemistry
• Tạp chí Hóa học
• Colorimetric detection
• Pharmaceutical analysis
• Polyvinyl alcohol citrate stabilized silver nanoparticles
• Anticancer activity
• Native silver resistant
• Subsequent antibacterial
• Silver nano
• Rhizoctonia solani
• Pseudomonas fluorescens
• Pathogen rhizoctonia solani kuhn
• Biogenic silver nanoparticles against rice
• Silver nanoparticle
• Phyllosphere associated bacterial strain
• Biogenic synthesis of silver nanoparticles
• BMC Chemistry
• Supported polysaccharide
• Silver sulfide
• Organic matter
• N–lauroylsarcosinate
• Lemongrass leaf
• Plant extract
• AgNO3 solution
• Al2O3 supported silver nanoparticles
• Thermal emission coefficient
• Physical method
• High antimicrobial activity
• Bonding capability
• Nanoparticles synthesized
• Cinnamomum cassia
• Biological systems
• Sprague Dawley rats
• Surface enhanced raman scattering
• A layer of silver nanoparticles
• The metal nanoparticles synthesized
• Prepare SERS substrate