Comparative study on the characterization of chitosan mixed natural phenolic aldehyde edible films

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science Pub Date : 2024-09-10 DOI:10.1002/app.56252

Jianfei Zhu, Xiaomei Chen, Tingting Huang, Dongling Tian

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Abstract

In this study, the reaction of six natural phenolic aldehydes, namely, ethyl vanillin (EV), syringaldehyde (SA), vanillin (VA), isovanillin (ISA), 2-hydroxy-4-methylbenzaldehyde (HDA), and p-hydroxy benzaldehyde (PHDA), with chitosan produces Schiff bases of chitosan films. All the complex films were characterized through instrumental analysis. The findings suggested that the degrees of substitution of CS-EV, CS-SA, CS-VA, CS-ISA, CS-HDA and CS-PHDA were 73.48%, 42.22%, 58.04%, 51.52%, 40.89% and 45.23%, respectively. The results of X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) analysis confirmed that natural phenolic aldehydes conjugated with chitosan through dynamic imine bonds. The tensile strength and water barrier properties of the films were significantly better than those of the chitosan film. Film thermal stability was altered as a result of the grafting of natural phenolic aldehydes on chitosan. According to the ABTS and DPPH data, the blended films showed better antioxidant packaging performance.

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壳聚糖混合天然酚醛食用薄膜特性的比较研究

在这项研究中，六种天然酚醛（即乙基香兰素（EV）、丁香醛（SA）、香兰素（VA）、异香兰素（ISA）、2-羟基-4-甲基苯甲醛（HDA）和对羟基苯甲醛（PHDA））与壳聚糖反应生成了希夫碱壳聚糖薄膜。所有复合物薄膜都通过仪器分析进行了表征。结果表明，CS-EV、CS-SA、CS-VA、CS-ISA、CS-HDA 和 CS-PHDA 的取代度分别为 73.48%、42.22%、58.04%、51.52%、40.89% 和 45.23%。X 射线光电子能谱（XPS）和傅立叶变换红外光谱（FT-IR）分析结果证实，天然酚醛通过动态亚胺键与壳聚糖共轭。薄膜的拉伸强度和水阻隔性能明显优于壳聚糖薄膜。在壳聚糖上接枝天然酚醛后，薄膜的热稳定性发生了变化。根据 ABTS 和 DPPH 数据，混合薄膜显示出更好的抗氧化包装性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Polymer Science 化学-高分子科学

CiteScore

5.70

自引率

10.00%

发文量

1280

审稿时长

2.7 months

期刊介绍： The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.