Two choices for the functionalization of silica nanoparticles with gallic acid: characterization of the nanomaterials and their antimicrobial activity against Paenibacillus larvae

Silica nanoparticles attached to gallic acid were synthesized from 7-nm diameter fumed silica particles by different functionalization methods involving the condensation of hydroxyl or carboxyl groups. The particles were characterized by thermal analyses and UV–vis, FTIR, NMR, and EPR spectroscopies...

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Detalles Bibliográficos
Autores principales: Vico, Tamara, Arce, Valeria Beatriz, Fangio, Maria Florencia, Gende, Liesel Brenda, Bertran, Celso Aparecido, Mártire, Daniel O., Churio, Maria Sandra
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
Química
Silica
3-aminopropyl-triethoxysilane
Phenolic acid
American foulbrood
Paenibacillus larvae
Semiquinone radicals
Nanoparticles
Microbiology
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/132514
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:Silica nanoparticles attached to gallic acid were synthesized from 7-nm diameter fumed silica particles by different functionalization methods involving the condensation of hydroxyl or carboxyl groups. The particles were characterized by thermal analyses and UV–vis, FTIR, NMR, and EPR spectroscopies. In comparison to free gallic acid, enhanced stability and increased antimicrobial activity against Paenibacillus larvae were found for the functionalized nanoparticles. Thus, both derivatization strategies result in improved properties of the natural polyphenol as antimicrobial agent for the treatment of honeybee pathologies.

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