Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging

A chitosan from biologically obtained chitin was successfully grafted with d,l-lactic acid (LA) in aqueous media using p-toluenesulfonic acid as catalyst to obtain a non-toxic, biodegradable packaging material that was characterized using scanning electron microscopy, water vapor permeability, and r...

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Autores principales: Sandoval, Laura N., López, Monserrat, Montes-Díaz, Elizabeth, Espadín, Andres, Tecante, Alberto, Gimeno, Miquel, Shirai, Keiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273688/
https://www.ncbi.nlm.nih.gov/pubmed/27070568
http://dx.doi.org/10.3390/molecules21040469
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author Sandoval, Laura N.
López, Monserrat
Montes-Díaz, Elizabeth
Espadín, Andres
Tecante, Alberto
Gimeno, Miquel
Shirai, Keiko
author_facet Sandoval, Laura N.
López, Monserrat
Montes-Díaz, Elizabeth
Espadín, Andres
Tecante, Alberto
Gimeno, Miquel
Shirai, Keiko
author_sort Sandoval, Laura N.
collection PubMed
description A chitosan from biologically obtained chitin was successfully grafted with d,l-lactic acid (LA) in aqueous media using p-toluenesulfonic acid as catalyst to obtain a non-toxic, biodegradable packaging material that was characterized using scanning electron microscopy, water vapor permeability, and relative humidity (RH) losses. Additionally, the grafting in chitosan with LA produced films with improved mechanical properties. This material successfully extended the shelf life of fresh cheese and inhibited the growth of Listeria monocytogenes during 14 days at 4 °C and 22% RH, whereby inoculated samples with chitosan-g-LA packaging presented full bacterial inhibition. The results were compared to control samples and commercial low-density polyethylene packaging.
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spelling pubmed-62736882018-12-28 Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging Sandoval, Laura N. López, Monserrat Montes-Díaz, Elizabeth Espadín, Andres Tecante, Alberto Gimeno, Miquel Shirai, Keiko Molecules Article A chitosan from biologically obtained chitin was successfully grafted with d,l-lactic acid (LA) in aqueous media using p-toluenesulfonic acid as catalyst to obtain a non-toxic, biodegradable packaging material that was characterized using scanning electron microscopy, water vapor permeability, and relative humidity (RH) losses. Additionally, the grafting in chitosan with LA produced films with improved mechanical properties. This material successfully extended the shelf life of fresh cheese and inhibited the growth of Listeria monocytogenes during 14 days at 4 °C and 22% RH, whereby inoculated samples with chitosan-g-LA packaging presented full bacterial inhibition. The results were compared to control samples and commercial low-density polyethylene packaging. MDPI 2016-04-08 /pmc/articles/PMC6273688/ /pubmed/27070568 http://dx.doi.org/10.3390/molecules21040469 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sandoval, Laura N.
López, Monserrat
Montes-Díaz, Elizabeth
Espadín, Andres
Tecante, Alberto
Gimeno, Miquel
Shirai, Keiko
Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title_full Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title_fullStr Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title_full_unstemmed Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title_short Inhibition of Listeria monocytogenes in Fresh Cheese Using Chitosan-Grafted Lactic Acid Packaging
title_sort inhibition of listeria monocytogenes in fresh cheese using chitosan-grafted lactic acid packaging
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273688/
https://www.ncbi.nlm.nih.gov/pubmed/27070568
http://dx.doi.org/10.3390/molecules21040469
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