Cargando…

Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties

Chitosan and chitosan-nanoparticles were combined to prepare biobased and unplasticized film blends displaying antimicrobial activity. Nanosized chitosans obtained by sonication for 5, 15, or 30 min were combined with chitosan at 3:7, 1:1, and 7:3 ratios, in order to adjust blend film mechanical pro...

Descripción completa

Detalles Bibliográficos
Autores principales: Gomes, Laidson P., Souza, Hiléia K. S., Campiña, José M., Andrade, Cristina T., Silva, António F., Gonçalves, Maria P., Paschoalin, Vania M. Flosi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337635/
https://www.ncbi.nlm.nih.gov/pubmed/30602680
http://dx.doi.org/10.3390/molecules24010127
_version_ 1783388300837388288
author Gomes, Laidson P.
Souza, Hiléia K. S.
Campiña, José M.
Andrade, Cristina T.
Silva, António F.
Gonçalves, Maria P.
Paschoalin, Vania M. Flosi
author_facet Gomes, Laidson P.
Souza, Hiléia K. S.
Campiña, José M.
Andrade, Cristina T.
Silva, António F.
Gonçalves, Maria P.
Paschoalin, Vania M. Flosi
author_sort Gomes, Laidson P.
collection PubMed
description Chitosan and chitosan-nanoparticles were combined to prepare biobased and unplasticized film blends displaying antimicrobial activity. Nanosized chitosans obtained by sonication for 5, 15, or 30 min were combined with chitosan at 3:7, 1:1, and 7:3 ratios, in order to adjust blend film mechanical properties and permeability. The incorporation of nanosized chitosans led to improvements in the interfacial interaction with chitosan microfibers, positively affecting film mechanical strength and stiffness, evidenced by scanning electron microscopy. Nanosized or blend chitosan film sensitivity to moisture was significantly decreased with the drop in biocomposite molecular masses, evidenced by increased water solubility and decreased water vapor permeability. Nanosized and chitosan interactions gave rise to light biobased films presenting discrete opacity and color changes, since red-green and yellow-blue colorations were affected. All chitosan blend films exhibited antimicrobial activity against both Gram-positive and Gram-negative bacteria. The performance of green unplasticized chitosan blend films displaying diverse morphologies has, thus, been proven as a potential step towards the design of nontoxic food packaging biobased films, protecting against spoilage microorganisms, while also minimizing environmental impacts.
format Online
Article
Text
id pubmed-6337635
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-63376352019-01-25 Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties Gomes, Laidson P. Souza, Hiléia K. S. Campiña, José M. Andrade, Cristina T. Silva, António F. Gonçalves, Maria P. Paschoalin, Vania M. Flosi Molecules Article Chitosan and chitosan-nanoparticles were combined to prepare biobased and unplasticized film blends displaying antimicrobial activity. Nanosized chitosans obtained by sonication for 5, 15, or 30 min were combined with chitosan at 3:7, 1:1, and 7:3 ratios, in order to adjust blend film mechanical properties and permeability. The incorporation of nanosized chitosans led to improvements in the interfacial interaction with chitosan microfibers, positively affecting film mechanical strength and stiffness, evidenced by scanning electron microscopy. Nanosized or blend chitosan film sensitivity to moisture was significantly decreased with the drop in biocomposite molecular masses, evidenced by increased water solubility and decreased water vapor permeability. Nanosized and chitosan interactions gave rise to light biobased films presenting discrete opacity and color changes, since red-green and yellow-blue colorations were affected. All chitosan blend films exhibited antimicrobial activity against both Gram-positive and Gram-negative bacteria. The performance of green unplasticized chitosan blend films displaying diverse morphologies has, thus, been proven as a potential step towards the design of nontoxic food packaging biobased films, protecting against spoilage microorganisms, while also minimizing environmental impacts. MDPI 2018-12-31 /pmc/articles/PMC6337635/ /pubmed/30602680 http://dx.doi.org/10.3390/molecules24010127 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gomes, Laidson P.
Souza, Hiléia K. S.
Campiña, José M.
Andrade, Cristina T.
Silva, António F.
Gonçalves, Maria P.
Paschoalin, Vania M. Flosi
Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title_full Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title_fullStr Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title_full_unstemmed Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title_short Edible Chitosan Films and Their Nanosized Counterparts Exhibit Antimicrobial Activity and Enhanced Mechanical and Barrier Properties
title_sort edible chitosan films and their nanosized counterparts exhibit antimicrobial activity and enhanced mechanical and barrier properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337635/
https://www.ncbi.nlm.nih.gov/pubmed/30602680
http://dx.doi.org/10.3390/molecules24010127
work_keys_str_mv AT gomeslaidsonp ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT souzahileiaks ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT campinajosem ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT andradecristinat ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT silvaantoniof ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT goncalvesmariap ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties
AT paschoalinvaniamflosi ediblechitosanfilmsandtheirnanosizedcounterpartsexhibitantimicrobialactivityandenhancedmechanicalandbarrierproperties