GREEN SYNTHESIS OF SILVER NANOPARTICALES FROM Cymodocea serrulata AND ITS ASSESSMENT OF ITS ANTIOXIDANT ACTIVITY

The green synthesis of Cymodocea serrulata silver nanoparticles was rendered by using
seagrass leaves extract. These extracts acted as a capping and reducing agent in stabilizing
the formation of AgNPs. The obtained NPs were characterized by using UV, FTIR, SEM,
TEM, EDX and XRD methods. UV–V is spectra of the reaction mixture of silver nitrate
solution with extract the peak was observed at 422.30nm indicating the presence of silver
nanoparticles. SEM analysis was carried out to understand the topology and the size of the
NPs, which showed the synthesis of higher density polydispersed spherical NPs of various
sizes that ranged from 22 to 65nm and crystalline nature of the nanoparticles. TEM analysis
illustrated the particles are spherical in shape and appear well-dispersed with a size range
from 18-65 nm. The EDX elemental analysis of the synthesized silver nanoparticles showed
highest proportion by weight of silver (80.22%) followed by Chloride (16.45%) and Oxygen
(4.43%). The crystalline nature of AgNPs was further established from X-ray diffraction
(XRD) analysis display the XRD pattern of nanoparticles acquired from colloid samples. The
antioxidant property of green synthesized AgNPs from Cymodocea serrulata extract was
determined to be nearest to the IC50 values of standards. This shows the ability of green
synthesized AgNPs to scavenge free radicals. The green synthesized AgNPs of Cymodocea
serrulate can be further exploited as a potential candidate for antioxidant agents.