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Synthesis of Ag@Fe2O3 nanocomposite based on O-carboxymethylchitosan with antimicrobial activity.
Demarchi, Carla Albetina; Bella Cruz, Alexandre; Slawska-Waniewska, Anna; Nedelko, Natalia; Dluzewski, Piotr; Kaleta, Anna; Trzcinski, Jerzy; Magro, Jacir Dal; Scapinello, Jaqueline; Rodrigues, Clovis Antonio.
Afiliação
  • Demarchi CA; Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Itajaí 88302-202, Santa Catarina, Brazil.
  • Bella Cruz A; Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Itajaí 88302-202, Santa Catarina, Brazil.
  • Slawska-Waniewska A; Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02668 Warsaw, Poland.
  • Nedelko N; Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02668 Warsaw, Poland.
  • Dluzewski P; Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02668 Warsaw, Poland.
  • Kaleta A; Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-02668 Warsaw, Poland.
  • Trzcinski J; Department of Geology, University of Warsaw, Zwirki i Wigury 93, 02-089 Warsaw, Poland.
  • Magro JD; Programa de Pós-Graduação em Ciências Ambientais, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC, Brazil.
  • Scapinello J; Programa de Pós-Graduação em Ciências Ambientais, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC, Brazil.
  • Rodrigues CA; Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajaí (UNIVALI), Itajaí 88302-202, Santa Catarina, Brazil. Electronic address: crodrigues@univali.br.
Int J Biol Macromol ; 107(Pt A): 42-51, 2018 Feb.
Article em En | MEDLINE | ID: mdl-28870753
In this paper, nano-hybrid particles of Ag@Fe2O3 based on O-carboxymethylchitosan were successfully synthesized using different reducing agents (NaBH4, sucrose) and without reducing agent. The smallest silver nanoparticles were those prepared without reducing agent (∼5±3nm). The average size of silver particles prepared with NaBH4 is around 5-15nm, and for samples prepared with sucrose, the average particle size is 10-25nm. The magnetization curves are roughly reversible, indicating that γ-Fe2O3 nanoparticles transit to a superparamagnetic state. Nanocomposites subjected to antimicrobial tests showed great antimicrobial activity against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria, and good activity against the yeast Candida albicans and resistant strains of Staphylococcus aureus. The antibacterial behavior as a function of time was investigated in microbial growth kinetics, and the best nanocomposite was the one without reducing agent, which completely inhibited microbial growth for 48h.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quitosana / Nanopartículas Metálicas / Anti-Infecciosos Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
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XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Quitosana / Nanopartículas Metálicas / Anti-Infecciosos Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda