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Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application

Environmentally friendly food packaging currently attracts much interest. Sodium trimetaphosphate (STMP) finds specialized applications in food, but it is rarely used as a crosslinking agent. In this study, STMP was used as a crosslinking agent to prepare chitosan/methylcellulose composite films. Bo...

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Detalles Bibliográficos
Autores principales: Wang, Hongxia, Liao, Yu, Wu, Ailiang, Li, Bing, Qian, Jun, Ding, Fuyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6419151/
https://www.ncbi.nlm.nih.gov/pubmed/30960352
http://dx.doi.org/10.3390/polym11020368
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author Wang, Hongxia
Liao, Yu
Wu, Ailiang
Li, Bing
Qian, Jun
Ding, Fuyuan
author_facet Wang, Hongxia
Liao, Yu
Wu, Ailiang
Li, Bing
Qian, Jun
Ding, Fuyuan
author_sort Wang, Hongxia
collection PubMed
description Environmentally friendly food packaging currently attracts much interest. Sodium trimetaphosphate (STMP) finds specialized applications in food, but it is rarely used as a crosslinking agent. In this study, STMP was used as a crosslinking agent to prepare chitosan/methylcellulose composite films. Both antibacterial and physicochemical properties of the composite film were improved by crosslinking with STMP. The crosslinked films, with good antibacterial activity (~99%), had increased tensile strength, a higher elongation at break, a lower swelling ratio and solubility, and a lower enzymatic degradation than the non-crosslinked films. Furthermore, the crosslinked films showed an excellent preservative effect on fresh-cut wax gourd after three days at room temperature. The obtained films crosslinked by STMP can be potentially applied to the food industry, such as food functional packaging, providing a novel alternative to traditional plastic packages.
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spelling pubmed-64191512019-04-02 Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application Wang, Hongxia Liao, Yu Wu, Ailiang Li, Bing Qian, Jun Ding, Fuyuan Polymers (Basel) Article Environmentally friendly food packaging currently attracts much interest. Sodium trimetaphosphate (STMP) finds specialized applications in food, but it is rarely used as a crosslinking agent. In this study, STMP was used as a crosslinking agent to prepare chitosan/methylcellulose composite films. Both antibacterial and physicochemical properties of the composite film were improved by crosslinking with STMP. The crosslinked films, with good antibacterial activity (~99%), had increased tensile strength, a higher elongation at break, a lower swelling ratio and solubility, and a lower enzymatic degradation than the non-crosslinked films. Furthermore, the crosslinked films showed an excellent preservative effect on fresh-cut wax gourd after three days at room temperature. The obtained films crosslinked by STMP can be potentially applied to the food industry, such as food functional packaging, providing a novel alternative to traditional plastic packages. MDPI 2019-02-20 /pmc/articles/PMC6419151/ /pubmed/30960352 http://dx.doi.org/10.3390/polym11020368 Text en © 2019 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
Wang, Hongxia
Liao, Yu
Wu, Ailiang
Li, Bing
Qian, Jun
Ding, Fuyuan
Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title_full Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title_fullStr Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title_full_unstemmed Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title_short Effect of Sodium Trimetaphosphate on Chitosan-Methylcellulose Composite Films: Physicochemical Properties and Food Packaging Application
title_sort effect of sodium trimetaphosphate on chitosan-methylcellulose composite films: physicochemical properties and food packaging application
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6419151/
https://www.ncbi.nlm.nih.gov/pubmed/30960352
http://dx.doi.org/10.3390/polym11020368
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