Multifunctional and pH-responsive dialdehyde cellulose/polyvinyl alcohol composite film reinforced with curcumin,Journal of Applied Polymer Science

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Multifunctional and pH-responsive dialdehyde cellulose/polyvinyl alcohol composite film reinforced with curcumin
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-12-16 , DOI: 10.1002/app.55035
Yidan Zhang _{1,

2} , Youjia Huang _{1,

2} , Yingbao Chen _{1,

2} , Zhiyong Qin _{1,

2}

Affiliation

The rational design of food packaging films with good antimicrobial activity, antioxidant activity, and monitorability is of great importance in intelligent packaging. In this study, an active composite film was prepared by adding curcumin to a dialdehyde cellulose (DAC)/polyvinyl alcohol (PVA) matrix. It was found that the Cur/DAC/PVA composite film exhibited optimal tensile strength at 30°C. The tensile strength of the composite film control PVA/DAC film was observed to increase by 176% due to the affection of hydrogen bonding. Under the influence of curcumin, the UV barrier property and antioxidant activity of the composite film were significantly increased, and the ABTS⁺• was removed by 0.5Cur/DAC/PVA up to 88% at low curcumin content. The water solubility and water vapor permeability were both reduced to some degree. It was also observed that composite film displayed an inhibitory effect on the growth of Staphylococcus aureus bacteria. Meanwhile, the Ritger and Peppas release model was used to study the release control capability of curcumin. Furthermore, the Cur/DAC/PVA composite film demonstrated excellent color response to pH, which it they could be used for intelligent packaging with real-time visual monitoring.

中文翻译：

姜黄素增强多功能pH响应型二醛纤维素/聚乙烯醇复合膜

合理设计具有良好抗菌活性、抗氧化活性和可监控性的食品包装薄膜对于智能包装具有重要意义。在本研究中，通过将姜黄素添加到二醛纤维素（DAC）/聚乙烯醇（PVA）基质中制备了活性复合膜。结果发现，Cur/DAC/PVA 复合膜在 30°C 时表现出最佳的拉伸强度。由于氢键的影响，复合膜对照 PVA/DAC 膜的拉伸强度增加了 176%。在姜黄素的影响下，复合膜的紫外线阻隔性和抗氧化活性显着提高，在低姜黄素含量下，0.5Cur/DAC/PVA对ABTS ⁺ •的去除率高达88%。水溶性和水蒸气渗透性均有所降低。还观察到复合膜对金黄色葡萄球菌的生长具有抑制作用。同时，利用Ritger和Peppas释放模型研究了姜黄素的释放控制能力。此外，Cur/DAC/PVA复合薄膜对pH表现出优异的颜色响应，可用于实时视觉监控的智能包装。

更新日期：2023-12-16

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