SciELO - Scientific Electronic Library Online

vol.28 issue6Removal of Arsenic /V) in Aqueous Solution by Modified Fungal Biomass of Aspergillus nigerRelationship of Training with Internet Adoption and E-Commerce: Differences in Microentrepreneurs from Chile author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Información tecnológica

On-line version ISSN 0718-0764


GONZALEZ, Rafael E; TARON, Arnulfo  and  PEREZ, Jaime. Biofilms of Gellan Loaded with Silver Nanoparticles: Physico Mechanical, Antimicrobials and Barrier Properties. Inf. tecnol. [online]. 2017, vol.28, n.6, pp.53-60. ISSN 0718-0764.

Biofilms based on low acyl gellan loaded with silver nanoparticles (AgNPs) were tested, evaluating their physical-mechanical, antimicrobial and barrier properties after 3 weeks of storage. The antimicrobial activity was evaluated against food-borne bacteria (Escherichia coli and Staphylococcus aureus) and two fungi (Aspergillus sp and Penicillium sp). The results showed that the storage time influence all the evaluated properties. Increasing the storage time decreases the tensile strength and transparency values. Also, the antimicrobial power and the water vapor permeability increased. This behavior is probably due to the leaching of silver ions, which decreases the number of bonds present in the polymer matrix. Such results are promising and suggest the possibility of using biofilms based on low acyl gellan as a system for the vehiculation of AgNPs for their gradual release while maintaining a sustained antimicrobial effect.

Keywords : biofilms; gellan gum; silver nanoparticles; permeability; tensile strength.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License