Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization
Chitosan offers real potential for use in food preservation, biomedicine, and environmental applications due to its excellent functional properties, such as ease in the fabrication of large films, biocompatibility, and antibacterial properties. However, the production and application of chitosan fil...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/11/11/1657 |
| _version_ | 1797493349262819328 |
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| author | Jie Xu Kun Liu Wei Chang Bor-Sen Chiou Maoshen Chen Fei Liu |
| author_facet | Jie Xu Kun Liu Wei Chang Bor-Sen Chiou Maoshen Chen Fei Liu |
| author_sort | Jie Xu |
| collection | DOAJ |
| description | Chitosan offers real potential for use in food preservation, biomedicine, and environmental applications due to its excellent functional properties, such as ease in the fabrication of large films, biocompatibility, and antibacterial properties. However, the production and application of chitosan films were limited by their strong residual acetic acid taste, weak mechanical properties, and poor water vapor barrier properties. In this study, the effects of the chitosan concentration in the film-forming solutions and the neutralization treatment on the physicochemical properties of chitosan films were examined. The results demonstrated that the chitosan concentration affected the mechanical and barrier properties of chitosan films without the neutralization treatment. This was mainly due to the low acetic acid contents in chitosan films after drying. Acetic acid acted as a plasticizer within chitosan films resulting in a looser network structure. After neutralization, the chitosan films showed improvements in properties, with little effect on the chitosan concentration in the film-forming solutions. Moreover, chitosan films after neutralization showed no residual acetic acid. Therefore, neutralization could effectively improve the performance of chitosan films. |
| first_indexed | 2024-03-10T01:18:45Z |
| format | Article |
| id | doaj.art-20f52f31f70a4b13bacc74e40965c5ff |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T01:18:45Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-20f52f31f70a4b13bacc74e40965c5ff2023-11-23T14:03:49ZengMDPI AGFoods2304-81582022-06-011111165710.3390/foods11111657Regulating the Physicochemical Properties of Chitosan Films through Concentration and NeutralizationJie Xu0Kun Liu1Wei Chang2Bor-Sen Chiou3Maoshen Chen4Fei Liu5State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaWestern Regional Research Center, ARS, U.S. Department of Agriculture, Albany, CA 94710, USAState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaState Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, ChinaChitosan offers real potential for use in food preservation, biomedicine, and environmental applications due to its excellent functional properties, such as ease in the fabrication of large films, biocompatibility, and antibacterial properties. However, the production and application of chitosan films were limited by their strong residual acetic acid taste, weak mechanical properties, and poor water vapor barrier properties. In this study, the effects of the chitosan concentration in the film-forming solutions and the neutralization treatment on the physicochemical properties of chitosan films were examined. The results demonstrated that the chitosan concentration affected the mechanical and barrier properties of chitosan films without the neutralization treatment. This was mainly due to the low acetic acid contents in chitosan films after drying. Acetic acid acted as a plasticizer within chitosan films resulting in a looser network structure. After neutralization, the chitosan films showed improvements in properties, with little effect on the chitosan concentration in the film-forming solutions. Moreover, chitosan films after neutralization showed no residual acetic acid. Therefore, neutralization could effectively improve the performance of chitosan films.https://www.mdpi.com/2304-8158/11/11/1657chitosan filmsphysicochemical propertiesconcentrationneutralization |
| spellingShingle | Jie Xu Kun Liu Wei Chang Bor-Sen Chiou Maoshen Chen Fei Liu Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization Foods chitosan films physicochemical properties concentration neutralization |
| title | Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization |
| title_full | Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization |
| title_fullStr | Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization |
| title_full_unstemmed | Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization |
| title_short | Regulating the Physicochemical Properties of Chitosan Films through Concentration and Neutralization |
| title_sort | regulating the physicochemical properties of chitosan films through concentration and neutralization |
| topic | chitosan films physicochemical properties concentration neutralization |
| url | https://www.mdpi.com/2304-8158/11/11/1657 |
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