El Instituto Politécnico Nacional
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http://repositoriodigital.ipn.mx/handle/123456789/11083| Título : | Synthesis and characterization of silver nanoparticles: effect on phytopathogen Colletotrichum gloesporioides |
| Palabras clave : | silver nanoparticles Colletotrichum gloesporioides gelatin antifungal activity |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | Springer |
| Descripción : | Colloidal silver nanoparticles were synthesized
by reducing silver nitrate solutions with glucose,
in the presence of gelatin as capping agent.The obtained
nanoparticles were characterized by means of
UV–Vis spectroscopy, transmission electron microscopy
(TEM), and Fourier transform infrared (FTIR)
spectroscopy. The response surface methodology
(RSM) was also used to determine the influence of the
variables on the size of the nanoparticles. The antifungal
activity of the silver nanoparticles was evaluated on the
phytopathogen Colletotrichum gloesporioides, which
causes anthracnose in a wide range of fruits. The UV–
Vis spectra indicated the formation of silver nanoparticles
preferably spherical and of relatively small size
(\20 nm). The above-mentioned was confirmed by
TEM, observing a size distribution of 5–24 nm.
According to RSM the synthesis variables influenced
on the size of the silver nanoparticles. Bymeans of FTIR
spectroscopy it was determined that gelatin, through
their amide and hydroxyl groups, interacts with nanoparticles
preventing their agglomeration. The growth of
C. gloesporioides in the presence of silver nanoparticles
was significantly delayed in a dose dependent manner. Instituto Politécnico Nacional, CONACYT |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11083 |
| Otros identificadores : | http://hdl.handle.net/123456789/592 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| abstact JNR.pdf | 57.52 kB | Adobe PDF | Visualizar/Abrir |
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