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A safe, efficient and environment friendly biosynthesis of silver nanoparticles using Leucaena leucocephala seed extract and its antioxidant, antimicrobial, antifungal activities and potential in sensing
- Source :
- Green Processing and Synthesis, Vol 6, Iss 5, Pp 449-459 (2017)
- Publication Year :
- 2017
- Publisher :
- De Gruyter, 2017.
-
Abstract
- One step green synthesis of silver nanoparticles (AgNPs) from silver nitrate (AgNO3) using Leucaena leucocephala seeds extract as the reducing agent at room temperature was performed. The bioreduced NPs were characterized by UV-vis spectroscopy, dynamic light scattering (DLS), transmission electron microscopy (TEM), scanning electron microscopy (SEM) coupled with energy dispersive spectrophotometry, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA) techniques. Qualitative information of major components in the seed extract was obtained through its phytochemical screening. The phytochemical data of L. leucocephala revealed the presence of terpenes, flavonoids, coumarins and sterols. The reaction was optimized for AgNO3, extract concentration and time duration for the reaction. The obtained NPs showed a characteristic UV peak of AgNPs at 420 nm. TEM and SEM images showed the spherical shaped NPs over which the extract coating was very prominent. The binding of L. leucocephala seeds extract onto NPs was tested using FTIR and TGA. The antifungal activity of the as-synthesized NPs against two fungal species, namely Phlebiopsis gigantea and Echinodontium taxodii, was studied. The antimicrobial effect of the as-synthesized NPs was ascertained against Escherichia coli and Staphylococcus aureus. The antioxidant potential of the AgNPs was tested with 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging. Also, the sensitivity of the NPs towards Fe3+ ions was tested in aqueous media.
- Subjects :
- Antifungal
staphylococcus aureus
silver nanoparticles
Antioxidant
DPPH
medicine.drug_class
Health, Toxicology and Mutagenesis
General Chemical Engineering
medicine.medical_treatment
02 engineering and technology
010402 general chemistry
dpph
01 natural sciences
Industrial and Manufacturing Engineering
Silver nanoparticle
chemistry.chemical_compound
Biosynthesis
medicine
Environmental Chemistry
Food science
phlebiopsis gigantea
QD1-999
echinodontium taxodii
sensing
Leucaena leucocephala
biology
Renewable Energy, Sustainability and the Environment
business.industry
technology, industry, and agriculture
021001 nanoscience & nanotechnology
Antimicrobial
biology.organism_classification
Environmentally friendly
0104 chemical sciences
Biotechnology
Chemistry
Fuel Technology
leucaena leucocephala
chemistry
escherichia coli
0210 nano-technology
business
bioreduction
Subjects
Details
- Language :
- English
- ISSN :
- 21919550 and 21919542
- Volume :
- 6
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Green Processing and Synthesis
- Accession number :
- edsair.doi.dedup.....8fbb0a81e80194920e0c171b6f3df8d7