Extracellular synthesis of silver bionanoparticles from Aspergillus clavatus and its antimicrobial activity against MRSA and MRSE

Microorganisms like fungi, actinomycetes and bacteria are considered nanofactories and are helpful in the production of nanoparticles useful in the welfare of human beings. In the present study, we investigated the production of silver nanoparticles from Streptomyces species JF714876. Extracellular synthesis of silver nanoparticles by Streptomyces species was carried out using two different media. Silver nanoparticles were examined using UV-visible, IR and atomic force microscopy. The size of silver nanoparticles was in the range of 80-100 nm. Antimicrobial activity of silver nanoparticle against bacteria such as E. coli, S. aureus, and dermatophytes like T. rubrum and T. tonsurans was determined. Thus, this study suggests that the Streptomyces sp. JF741876 can produce silver ions that can be used as an antimicrobial substance.

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Biosynthesis of Gold Nanoparticles Using Fusarium oxysporum f. sp. cubense JT1, a Plant Pathogenic Fungus

ISRN Biotechnology ◽

10.5402/2013/515091 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 9

Author(s):

Janki N. Thakker ◽

Pranay Dalwadi ◽

Pinakin C. Dhandhukia

Keyword(s):

Antimicrobial Activity ◽

Gold Nanoparticles ◽

Chloride Solution ◽

Pathogenic Fungus ◽

Particle Size Analysis ◽

Size Analysis ◽

Plant Pathogenic Fungus ◽

Extracellular Synthesis ◽

Vis Spectroscopy ◽

Methods Of Synthesis

The development of reliable processes for the synthesis of gold nanoparticles is an important aspect of current nanotechnology research. Recently, reports are published on the extracellular as well as intracellular biosynthesis of gold nanoparticles using microorganisms. However, these methods of synthesis are rather slow. In present study, rapid and extracellular synthesis of gold nanoparticles using a plant pathogenic fungus F. oxysporum f. sp. cubense JT1 (FocJT1) is reported. Incubation of FocJT1 mycelium with auric chloride solution produces gold nanoparticles in 60 min. Gold nanoparticles were characterized by UV-Vis spectroscopy, FTIR, and particle size analysis. The particles synthesized were of 22 nm sized, capped by proteins, and posed antimicrobial activity against Pseudomonas sp.

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Synthesis and biological evaluation of newer 1,3,4-oxadiazoles incorporated with benzothiazepine and benzodiazepine moieties

Zeitschrift für Naturforschung C ◽

10.1515/znc-2016-0129 ◽

2017 ◽

Vol 72 (3-4) ◽

pp. 133-146 ◽

Cited By ~ 3

Author(s):

Patel Navin ◽

Patel Sarvil ◽

Purohit Amit ◽

Patel Divyesh ◽

Rajani Dhansukh ◽

...

Keyword(s):

Escherichia Coli ◽

Antimicrobial Activity ◽

Giardia Lamblia ◽

Antitubercular Activity ◽

Biological Evaluation ◽

Leishmania Mexicana ◽

Aspergillus Clavatus ◽

Biological Screening ◽

Synthesis And Biological Evaluation

Abstract A series of thiazepines and diazepines having 1,3,4-oxadiazole moiety were synthesized, and they were analyzed for their in vitro antimicrobial activity against several bacteria (Staphylococcus aureus, Staphylococcus pyogenes, Escherichia coli, and Pseudomonas aeruginosa) and fungi (Candida albicans, Aspergillus niger, and Aspergillus Clavatus) and protozoa (Entamoeba histolytica, Giardia lamblia, Trypanosoma cruzi and Leishmania mexicana). Few of the selected compounds were tested for their antitubercular activity. However, it was noticed that the potency of final analogs against each strain placed reliance on the type of substituent present on aryl ring of oxadiazole as well as presence of thiophene, pyridine, and furan at benzothiazepines and benzodiazepines. The biological screening identified that some of the compounds were found to possess good antimicrobial and antitubercular (62.5–100 μg/mL of MIC) activity.

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Stachybotrys chartarum: A Novel Biological Agent for The Extracellular Synthesis of Silver Nanoparticles and Their Antimicrobial Activity

Indonesian Journal of Biotechnology ◽

10.22146/ijbiotech.7871 ◽

2015 ◽

Vol 18 (2) ◽

pp. 75 ◽

Cited By ~ 2

Author(s):

Abdel Ghany Tarek Mohamed

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Antimicrobial Activity ◽

Silver Nanoparticles ◽

Silver Nitrate ◽

Stachybotrys Chartarum ◽

Capping Agent ◽

Extracellular Synthesis ◽

Transmission Electron

Microbial assisted biosynthesis of nanoparticles is a rapidly progressing area of nanobiotechnology. Inthis paper Stachybotrys chartarum assisted extracellular synthesis of silver nanoparticles (AgNPs) is reportedwhen challenged with 1mM silver nitrate (AgNO3). The characterization of AgNPs was carried out visualobservation and UV-Vis spectrophotometry. Further analysis carried out by Fourier Transform InfraredSpectroscopy (FTIR), provides evidence for the presence of proteins as capping agent, which helps in increasingthe stability of the synthesized AgNPs. Transmission Electron Microscopy (TEM) investigations confi rmedthat AgNPs were formed. The synthesized silver nanoparticles were found in the range of 65-108 nm. Finally,the antimicrobial susceptibility of AgNPs synthesized was investigated which exhibited more potent activityagainst bacteria than fungi compared with using silver nitrate at concentration 1mM. Keywords: Antimicrobial activity, Stachybotrys chartarum, Silver nanoparticles

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Extracellular Synthesis of Gold Nano Particles from Pseudomonas stutzeri (MTCC 8362) and its Antimicrobial Activity

International Journal of Innovative Research in Science Engineering and Technology ◽

10.15680/ijirset.2016.0509134 ◽

2016 ◽

Vol 5 (9) ◽

pp. 16482-16489

Author(s):

Wajed Khan, Pethe. A.S

Keyword(s):

Antimicrobial Activity ◽

Pseudomonas Stutzeri ◽

Nano Particles ◽

Extracellular Synthesis ◽

Gold Nano Particles

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Green Extracellular Synthesis of the Silver Nanoparticles Using Thermophilic Bacillus Sp. AZ1 and its Antimicrobial Activity Against Several Human Pathogenetic Bacteria

Iranian Journal of Biotechnology ◽

10.15171/ijb.1259 ◽

2016 ◽

Vol 14 (2) ◽

pp. 25-32 ◽

Cited By ~ 23

Author(s):

Ali Deljou ◽

Samad Goudarzi

Keyword(s):

Antimicrobial Activity ◽

Silver Nanoparticles ◽

Bacillus Sp ◽

Thermophilic Bacillus ◽

Extracellular Synthesis

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Synthesis of s-Triazine-Based Thiazolidinones as Antimicrobial Agents

Zeitschrift für Naturforschung C ◽

10.1515/znc-2012-3-402 ◽

2012 ◽

Vol 67 (3-4) ◽

pp. 108-122

Author(s):

Divyesh Patel ◽

Rahul Patel ◽

Premlata Kumari ◽

Navin B. Patel

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Pseudomonas Aeruginosa ◽

Antimicrobial Activity ◽

Antimicrobial Agents ◽

Shigella Flexneri ◽

Salmonella Typhi ◽

Proteus Vulgaris ◽

Aspergillus Clavatus ◽

Schiff Base Derivatives

5A novel series of thiazolidinone derivatives, namely 4-{4-dimethylamino-6-[4-oxo- 2-phenyl-5-(4-pyridin-2-yl-piperazin-1-ylmethyl)-thiazolidin-3-yl]-[1,3,5]-triazin-2-yloxy}- 1-methyl-1H-quinolin-2-ones, have been synthesized from the key intermediate 4-(4-amino- 6-dimethylamino-[1,3,5]-triazin-2-yloxy)-1-methyl-1H-quinolin-2-one (). Compound 5 was condensed with various aldehydes to give Schiff base derivatives, which after cyclization gave thiazolidinones that were linked with 1-pyridin-2-yl-piperazine to obtain the target compounds. The newly synthesized compounds were evaluated for their antimicrobial activity against eight bacteria (Staphylococcus aureus, Bacillus cereus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Salmonella typhi, Proteus vulgaris, Shigella flexneri) and four fungi (Aspergillus niger, Candida albicans, Aspergillus fumigatus, Aspergillus clavatus)

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