Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Biosynthesis, structural characterization and antimicrobial activity of gold and silver nanoparticles
Colloids and Surfaces B: Biointerfaces, Volume 107, Year 2013
Notification
URL copied to clipboard!
Description
An eco friendly simple biosynthetic route was used for the preparation of monodisperse and highly crystalline gold and silver nanoparticles using cell free extract of fungus, Candida albicans. Transmission electron microscopic studies show the formation of gold and silver nanocrystals of average size of 5nm and 30nm with the specific surface areas of 18.9m2/g and 184.4m2/g respectively. The interaction of gold and silver nanoparticles with proteins has been formulated by FT-IR spectroscopy and thermal gravimetric analysis. The formation of gold and silver nanoparticles was also confirmed by the appearance of a surface plasmon band at 540nm and 450nm respectively. The antimicrobial activity of the synthesized gold and silver nanoparticles was investigated against both Staphylococcus aureus and Escherichia coli. The results suggest that these nanoparticles can be used as effective growth inhibitors against the test microorganisms. Greater bactericidal activity was observed for silver nanoparticles. The E. coli, a gram negative bacterium was found to be more susceptible to gold and silver nanoparticles than the S. aureus, a gram positive bacterium. © 2013 Elsevier B.V.
Authors & Co-Authors
Ahmad, Tokeer
India, New Delhi
Jamia Millia Islamia
Wani, Irshad A.
India, New Delhi
Jamia Millia Islamia
Manzoor, Nikhat
India, New Delhi
Jamia Millia Islamia
Ahmed, Jahangeer Feroze
United States, East Lansing
Michigan State University
Asiri, Abdullah M.
Saudi Arabia, Jeddah
King Abdulaziz University
Statistics
Citations: 227
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1016/j.colsurfb.2013.02.004
ISSN:
09277765
e-ISSN:
18734367