Open AccessGundelia tournefortii L.: a natural source for the green synthesis of silver nanoparticles
Author(s) -
Allafchian Ali Reza,
Farhang Hamid Reza,
Jalali Sayed Amir Hossein,
Vahabi Mohammad Reza
Publication year - 2017
Publication title -
iet nanobiotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.366
H-Index - 38
eISSN - 1751-875X
pISSN - 1751-8741
DOI - 10.1049/iet-nbt.2017.0062
Subject(s) - silver nanoparticle , absorbance , bacillus cereus , nuclear chemistry , fourier transform infrared spectroscopy , nanoparticle , transmission electron microscopy , chemistry , nanobiotechnology , nanotechnology , scanning electron microscope , silver nano , materials science , bacteria , chemical engineering , nano , chromatography , biology , engineering , composite material , genetics
The present study focused on the synthesis of spherical silver nanoparticles (Ag NPs) using Gundelia tournefortii L. aerial part extract. The plant extract could reduce silver ions into Ag NPs. To identify the compounds responsible for the reduction of silver ions, functional groups present in plant extract were investigated by Fourier transform infrared spectroscopy. Techniques used to characterise synthesised nanoparticles included field emission scanning electron microscopy, X‐ray diffraction and transmission electron microscopy. UV‐visible spectrophotometer showed the absorbance peak in the range of 400–450 nm. The Ag NPs showed antibacterial activities against both gram positive ( Staphylococcus aureus and Bacillus Cereus ) and gram negative ( Salmonella typhimurium and Escherichia coli ) microorganisms. The results confirmed that this protocol was simple, rapid, eco‐friendly, low‐priced and non‐toxic; therefore, it could be used as an alternative to conventional physical/chemical methods. Only 5 min were required for the conversion of silver ions into Ag NPs at room temperature, without the involvement of any hazardous chemical.