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Stainless steel and polyethylene surfaces functionalized with silver nanoparticles.
Fialho, José Fq; Naves, Emiliane Aa; Bernardes, Patrícia C; Ferreira, Deusmaque C; Dos Anjos, Letícia D; Gelamo, Rogério V; de Sá, João Pn; de Andrade, Nélio J.
Afiliação
  • Fialho JF; 1 Food Technology Department, 28120 University Federal of Viçosa (UFV) , Viçosa, Brazil.
  • Naves EA; 2 Department of Food Engineering, Institute of Technological and Exact Sciences, 74348 University Federal of TriânguloMineiro (UFTM) , Uberaba, Brazil.
  • Bernardes PC; 3 Department of Food Engineering-Agrarian Science Center, 28126 University Federal of Espírito Santo (UFES)-Alto Universitário, Guararema, Brazil.
  • Ferreira DC; 2 Department of Food Engineering, Institute of Technological and Exact Sciences, 74348 University Federal of TriânguloMineiro (UFTM) , Uberaba, Brazil.
  • Dos Anjos LD; 2 Department of Food Engineering, Institute of Technological and Exact Sciences, 74348 University Federal of TriânguloMineiro (UFTM) , Uberaba, Brazil.
  • Gelamo RV; 2 Department of Food Engineering, Institute of Technological and Exact Sciences, 74348 University Federal of TriânguloMineiro (UFTM) , Uberaba, Brazil.
  • de Sá JP; 1 Food Technology Department, 28120 University Federal of Viçosa (UFV) , Viçosa, Brazil.
  • de Andrade NJ; 1 Food Technology Department, 28120 University Federal of Viçosa (UFV) , Viçosa, Brazil.
Food Sci Technol Int ; 24(1): 87-94, 2018 Jan.
Article em En | MEDLINE | ID: mdl-28929793
The antimicrobial effects of a stainless steel surface and a polyethylene surface functionalized with silver nanoparticles on the adhesion of different bacteria and the changes in physical and chemical characteristics of these surfaces that influence biofilm formation were evaluated. The functionalized surfaces of polyethylene and stainless steel were more hydrophobic than the control ones. The bacterial surfaces were hydrophilic. The adhesion of all bacteria was thermodynamically favorable (ΔGadhesion<0) on all surfaces functionalized and control. The numbers of adhered cells of Staphylococcus aureus, Escherichia coli, and Pseudomonas fluorescens were not significantly different (p > 0.05) between the control and functionalized surfaces, reaching values compatible with biofilm formation. Analysis of atomic absorption spectrometry using water and reconstituted skim milk as simulants showed no release of Ag from the functionalized surfaces. In conclusion, the surfaces that were functionalized with silver nanoparticles were modified in hydrophobicity, roughness, and did not avoid bacterial adhesion. Additional studies of surfaces functionalized with silver nanoparticles should be conducted addressing the adsorption technique of silver nanoparticles on the stainless steel surface as well as in the preparation of the polyethylene surface to allow the contact of microorganism with the antimicrobial agent.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Prata / Aço Inoxidável / Polietileno / Nanopartículas Metálicas Idioma: En Revista: Food Sci Technol Int Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Prata / Aço Inoxidável / Polietileno / Nanopartículas Metálicas Idioma: En Revista: Food Sci Technol Int Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos