碳点嵌入卡拉基南基可堆肥功能包装薄膜,带有壁垒生物涂层,用于的新鲜度监测
U K Sangeetha1, Sriparna De2, Sultana Khatun2
1Materials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
International journal of biological macromolecules
|April 30, 2025
概括
带有聚合诱导排放碳点的智能生物聚合物包装膜可以检测食物腐烂. 这些可堆肥薄膜具有屏障特性,阻紫外线和抗菌活性,提高食品安全性和保质期.
科学领域:
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
- 生物技术是生物技术.
背景情况:
- 智能包装膜对于食品行业至关重要,它提供了可堆肥性,新鲜度监测和延长保质期.
- 基于生物聚合物的薄膜正在因其对环境的好处和功能性质而获得吸引力.
研究的目的:
- 开发一种使用生物聚合物和碳点的新型胺基感应智能包装材料.
- 提高食品应用开发的包装膜的屏障性能和功能.
主要方法:
- 基于尿素二硫酸的碳点 (UCD) 与聚合诱导排放 (AIE) 纳入卡拉基安生物聚合物.
- 将复合薄膜涂上-酸 (Z/SA) 混合物,以提高防水性能.
- 电影的氨感应,抗氧化,紫外线阻断,抗菌,机械和热性质的表征.
主要成果:
- 开发的膜 (CAR3UCD-C) 证明了低检测极限 (0.6μM) 的氨感应.
- 该膜表现出显著的自由基清除活性 (70%),高紫外线阻断 (92%的减少),以及对大肠杆菌和金黄色杆菌的抗菌特性.
- 该材料表现出优异的抗拉强度 (>50 MPa),高达200°C的热稳定性,并通过光变化有效地表明了的损坏.
- 涂层薄膜达到水蒸气传递率≤40g/m2·day,并且在35天内完全生物降解.
结论:
- 开发的智能包装膜对海鲜和富含蛋白质食品的实时新鲜度监测有很大的前景.
- 膜的屏障,感应和可降解性质的组合使其成为食品包装的可持续替代品.
相关概念视频
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:28Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...