| dc.description.abstract | The synthesis of silver nanoparticles can use plant extracts as silver reducing
agents. The content in plants that can play a role as a reducing agent is flavonoids.
Telang flowers (Clitoria ternatea) are plants that contain flavonoids. The use of
different solvents on plant extracts can affect the stability of silver nanoparticles.
The purpose of this study was to compare the stability of silver nanoparticles with
ethanolic extract of telang flowers and silver nanoparticles with water extract of
telang flower. In this research, it started from making ethanol extracts of telang
flowers with infundation modification method and telang flower extracts with
infundation methods, biosynthesis of silver nanoparticles with bottom-up method,
characterization by visual observation and wavelength measurement, evaluating
stability by visual observation, wavelength, absorbance, particle size, polydispers
index, and zeta potential. The results of the calculation %CV silver nanoparticles
of telang flowers with ethanol extract and silver nanoparticles of telang flower with
water extracts respectively were the value of %CV wavelengths 6.497% and 0.78%,
the value of %CV absorbance 10.84% and 17.46%, the value of %CV particle size
11.404% and 15.029%, the value of %CV polydispersion index 17.22% and
14.61%, the value of %CV zeta potential -35.00% and -59.95%. Based on the %CV
values obtained, silver nanoparticles with water extract of telang flower was more
stable when viewed from the parameters of wavelength, polydispersity index, and
zeta potential. Whereas in silver nanoparticles with ethanolic extract of telang
flowers has better stability when viewed from the parameters of the absorbance
value and particle size. So it can be concluded that the use of different solvents in
extracts can affect the stability of the formed silver nanoparticles (Clitoria
ternatea). | en_US |
