73. Green synthesis of silver nanoparticles from Phyllanthus amarus and their antibacterial and antioxidant
properties
By Subbaiya, R.; Lavanya, R. S.; Selvapriya, K.; Selvam, M. Masilamani
From International Journal of Current Microbiology and Applied Sciences (2014), 3(1), 600-606. Language: English,
Database: CAPLUS
An environmental friendly approach is employed to synthesize silver nanoparticles. The biomols. found in plants induce
the redn. of Ag+ ions from silver nitrate to silver nanoparticles (AgNPs). UV-visible spectrum of the aq. medium contg.
silver ions demonstrated a peak at 404nm corresponding to the plasmon absorbance of silver nanoparticles. Fourier
Transform Infra-Red spectroscopy was done to find the functional groups present. Antioxidant activities were done using
DPPH antioxidant assay and Hydrogen Peroxide assay. Plants during glycolysis produce a large amt. of H+ ions along
with NAD which acts as a strong redoxing agent; this seems to be responsible for the formation of AgNPs. AgNPs
produced show good antimicrobial activity against common pathogens. Green synthesis of silver nanoparticles exhibits
an important ecofriendly and useful to the environment. UV-visible spectrophotometer used to predict that where the
synthesis has been done or not. Whereas the org. functional groups were detd. by FT-IR with different wave no. and it
has detd. by the functional group data anal. Keywords: DPPH, FT-IR, Silver nanoparticles, NAD.
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