Paper Search Console

Home Search Page About Contact

Journal Title

Title of Journal: World J Microbiol Biotechnol

Search In Journal Title:

Abbravation: World Journal of Microbiology and Biotechnology

Search In Journal Abbravation:

Publisher

Springer Netherlands

Search In Publisher:

DOI

10.1007/s10741-013-9381-z

Search In DOI:

ISSN

1573-0972

Search In ISSN:
Search In Title Of Papers:

Extracellular biosynthesis of silver nanoparticles

Authors: Sepideh Hamedi Seyed Abbas Shojaosadati Soheila Shokrollahzadeh Sameereh HashemiNajafabadi
Publish Date: 2013/09/26
Volume: 30, Issue: 2, Pages: 693-704
PDF Link

Abstract

In the present study the biosynthesis of silver nanoparticles AgNPs using Neurospora intermedia as a new nonpathogenic fungus was investigated For determination of biomass harvesting time the effect of fungal incubation period on nanoparticle formation was investigated using UV–visible spectroscopy Then AgNPs were synthesized using both culture supernatant and cellfree filtrate of the fungus Two different volume ratios 1100 and 11 of the culture supernatant to the silver nitrate were employed for AgNP synthesis In addition cellfree filtrate and silver nitrate were mixed in presence and absence of light Smallest average size and highest productivity were obtained when using equal volumes of the culture supernatant and silver nitrate solution as confirmed by UV–visible spectra of colloidal AgNPs Comparing the UV–visible spectra revealed that using cellfree filtrate for AgNP synthesis resulted in the formation of particles with higher stability and monodispersity than using culture supernatant The absence of light in cellfree filtrate mediated synthesis led to the formation of nanoparticles with the lowest rate and the highest monodispersity The presence of elemental silver in all prepared samples was confirmed using EDX while the crystalline nature of synthesized particles was verified by XRD FTIR results showed the presence of functional groups which reduce Ag+ and stabilize AgNPs The presence of nitrate reductase was confirmed in the cellfree filtrate of the fungus suggesting the potential role of this enzyme in AgNP synthesis Synthesized particles showed significant antibacterial activity against E coli as confirmed by examining the growth curve of bacterial cells exposed to AgNPs

Keywords:

References

.
Search In Abstract Of Papers:
Other Papers In This Journal:
  1. Shifts in alkane-degrading bacteria genotypes during bioremediation of a vegetated coastal soil
  2. Lipase-catalysed kinetic resolution of secondary alcohols with improved enantioselectivity in propylene carbonate
  3. Isolation and the interaction between a mineral-weathering Rhizobium tropici Q34 and silicate minerals
  4. Cloning and expression analysis of three secreted protein genes from wheat stripe rust fungus Puccinia striiformis f. sp. tritici
  5. The Effects of Bacterial Leaching on Metal Partitioning in Sewage Sludge
  6. Coexistence of quorum-quenching and quorum-sensing in tropical marine Pseudomonas aeruginosa strain MW3A
  7. Characterization and selection of Lactobacillus strains for their effect on bile tolerance, taurocholate deconjugation and cholesterol removal
  8. Nicotine degradation by two novel bacterial isolates of Acinetobacter sp. TW and Sphingomonas sp. TY and their responses in the presence of neonicotinoid insecticides
  9. Phospholipids and protein adaptation of Pseudomonas sp. to the xenoestrogen tributyltin chloride (TBT)
  10. Changes of chemical and nutrient composition of porcine blood during fermentation by Aspergillus oryzae
  11. Molecular cloning and heterologous expression of an acid stable xylanase gene from Alternaria sp. HB186
  12. Effects of lactoferrin derived peptides on simulants of biological warfare agents
  13. Glyceryl trinitrate and caprylic acid for the mitigation of the Desulfovibrio vulgaris biofilm on C1018 carbon steel
  14. Isolation of phenanthrene-degrading bacteria and characterization of phenanthrene metabolites
  15. Decolorization of Fast red by metabolizing cells of Oenococcus oeni ML34
  16. Croatian barberry ( Berberis croatica Horvat): a new source of berberine—analysis and antimicrobial activity
  17. Immunological Biosensor for Detection of Vibrio cholerae O1in Environmental Water Samples
  18. Aerobic biodegradation of methyl tert -butyl ether (MTBE) by pure bacterial cultures isolated from contaminated soil
  19. In vitro evaluation of the effect of the nematophagous fungi Duddingtonia flagrans , Monacrosporium sinense and Pochonia chlamydosporia on Schistosoma mansoni eggs
  20. Comparison of bacterial community structures of terrestrial cyanobacterium Nostoc flagelliforme in three different regions of China using PCR-DGGE analysis
  21. Comparison of 16S rRNA sequencing with biochemical testing for species-level identification of clinical isolates of Neisseria spp.
  22. Bioremediation of Textile Azo Dyes by Trichophyton rubrum LSK-27
  23. Biosynthesis of Poly(3-hydroxybutyrate- co -3-hydroxyvalerate- co -4-hydroxybutyrate) terpolymer by Cupriavidus sp. USMAA2-4 through two-step cultivation process
  24. Transformed soybean ( Glycine max ) roots as a tool for the study of the arbuscular mycorrhizal symbiosis
  25. Beneficial effects of enhanced aeration using perfluorodecalin in Yarrowia lipolytica cultures for lipase production
  26. Saccharomyces cerevisiae and metabolic activators: HXT3 gene expression and fructose/glucose discrepancy in sluggish fermentation conditions
  27. Isolation and characterization of soil Streptomyces species as potential biological control agents against fungal plant pathogens
  28. Screening, breeding and metabolic modulating of a strain producing succinic acid with corn straw hydrolyte
  29. Antimicrobial activity of the imipenem/rifampicin combination against clinical isolates of Acinetobacter baumannii grown in planktonic and biofilm cultures
  30. Decolorization of diazo dye Direct Red 81 by a novel bacterial consortium
  31. Production of poly(3-hydroxybutyrate- co -3-hydroxyvalerate) P(3HB- co -3HV) with a broad range of 3HV content at high yields by Burkholderia sacchari IPT 189
  32. Tolypothrix tenuis stress response to nickel
  33. Assessment of antibacterial activity of silver nanoparticles on Pseudomonas aeruginosa and its mechanism of action
  34. Bacterioplankton community analysis in tilapia ponds by Illumina high-throughput sequencing
  35. Microbiological, physical–chemical and sensory evaluation of a traditional Brazilian cheese during the ripening process
  36. Aureobasidium pullulans as a source of liamocins (heavy oils) with anticancer activity
  37. Native isolate of Trichoderma : a biocontrol agent with unique stress tolerance properties
  38. Microbial community analysis of three municipal wastewater treatment plants in winter and spring using culture-dependent and culture-independent methods
  39. chr genes from adaptive replicons are responsible for chromate resistance by Burkholderia xenovorans LB400
  40. Role of nitrate in biological phosphorus removal in a sequencing batch reactor
  41. Production of fructose from inulin using mixed inulinases from Aspergillus niger and Candida guilliermondii
  42. Effect of gamma irradiation on microbial load, aflatoxins and phytochemicals present in Trigonella foenum-graecum
  43. Comparative analysis of flavonoids and polar metabolites from hairy roots of Scutellaria baicalensis and Scutellaria lateriflora
  44. Effect of the ratio of (+) and (−) mating type of Blakeslea trispora on carotene production from cheese whey in submerged fermentation
  45. Phylogenetic and phenotypic analyses of arsenic-reducing bacteria isolated from an old tin mine area in Thailand
  46. Effects of hydroxypropyl-β-cyclodextrin on the growth and morphology of Absidia coerulea
  47. Optimization of auto-induction medium for G-CSF production by Escherichia coli using artificial neural networks coupled with genetic algorithm
  48. Degenerate primer design to clone the human repertoire of immunoglobulin heavy chain variable regions
  49. Impact of different spray-drying conditions on the viability of wine Saccharomyces cerevisiae strains
  50. Modeling the impact of the indigenous microbial population on the maximum population density of Salmonella on alfalfa
  51. At-line monitoring of key parameters of nisin fermentation by near infrared spectroscopy, chemometric modeling and model improvement
  52. Characterization of aerobic heterotrophic bacteria in cold and nutrient-poor freshwater ecosystems
  53. Isolation and identification of endophytic fungus SX01, a red pigment producer from Ginkgo biloba L
  54. Substrate contribution on free radical scavenging capacity of carotenoid extracts produced from Blakeslea trispora cultures
  55. Inhibition of Pichia stipitis fermentation of hydrolysates from olive tree cuttings
  56. Production of a novel raw-starch-digesting glucoamylase by Penicillium sp. X-1 under solid state fermentation and its use in direct hydrolysis of raw starch
  57. Root-promoting rhizobacteria in Eucalyptus globulus cuttings
  58. Improved production of poly(3-hydroxybutyrate- co -4-hydroxbutyrate) copolymer using a combination of 1,4-butanediol and γ-butyrolactone
  59. Are bioleaching rates determined by the available particle surface area concentration?
  60. Biodegradation of anthracene by a novel actinomycete, Microbacterium sp. isolated from tropical hydrocarbon-contaminated soil
  61. Intestinal microbiome and digoxin inactivation: meal plan for digoxin users?
  62. Identification and characterization of H10 enzymes isolated from Bacillus cereus H10 with keratinolytic and proteolytic activities
  63. Impact of sewage sludge on the soil bacterial communities by DNA microarray analysis
  64. Characterizing cultivable soil microbial communities from copper fungicide-amended olive orchard and vineyard soils
  65. Poly(lactic- co -glycolic acid) matrix incorporated with nisin as a novel antimicrobial biomaterial
Search Result: