Biosynthesis of Silver Nanoparticles Using Calendula officinalis (L.) Extract and Evaluating their Antioxidant Activity
الباحث الأول:
Kareem Talib Khshan
الباحثين الآخرين:
Hider Abass Alkafaje
المجلة:
IOP Conference Series: Earth and Environmental Science
تاريخ النشر:
None
مختصر البحث:
The study was conducted in the Faculty of Sciences / University of Kufa from 2/2/2018 to 1/5/2019.Biosynthesis of silver
nanoparticles using aqueous, flower extracts of Calendula officinalis (L.) was firstly indicated by the color change of
reacti…
The study was conducted in the Faculty of Sciences / University of Kufa from 2/2/2018 to 1/5/2019.Biosynthesis of silver
nanoparticles using aqueous, flower extracts of Calendula officinalis (L.) was firstly indicated by the color change of
reaction mixture from yellow into reddish brown. Concentration10mM of AgNO3 and time of incubation 24 hours was done
.The characterization of biosynthesized nanoparticles was achieved using UV- Spectrophotometer is a proven technique for
the analysis of the nanoparticles .In Scanning electron microscope(SEM) (The shape was spherical and homogenous and the
size was ranged between (63-100nm) of silver nanoparticles synthesized by plants C. officinalis. X-ray diffraction(the
determination of average size of biogenic silver nanoparticles for C. officinalis was (16.73)nm, while for the commercial
AgNO3 was (63)nm . FTIR spectroscopy analysis showed the presence of flavonoids, polyphenols and amide groups likely
to be responsible for the green synthesis of silver nanoparticle. Antioxidant activity of silver nanoparticle of extract were
investigated at 330, 230 and 55 µg/ml that have efficient to reduction absorbance of free radicals. The largest inhibition titer
was found in the mixture of DPPH with AgNPs biosynthesis from C.officinalis at the concentration 1.5mg/ml(91%) ; while
the smallest inhibition titer was found in the mixture of DPPH with AgNPs biosynthesis from C.officinalis at the
concentration 0.5mg/ml(65%)
