文献类型：期刊文献

英文题名：A bio-based packagingfilm functionalized by self-assembly natural nanospheres for spoilage detection and fresh-cut fruit preservation ?

作者：Zhou, Lulu[1]; Ren, Xinqi[1]; Hu, Jing[2]

机构：[1] School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, China; [2] School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2025

外文期刊名：SSRN

收录：EI(收录号：20260010460)

语种：英文

外文关键词：Biocompatibility - Biodegradability - Chemical sensors - Food preservation - Food storage - Fruits - Metal ions - Nanospheres - Packaging - Packaging machines - Self assembly - Shelf life - Spoilage

摘要：Smart packaging technologies are revolutionizing the food industry by extending shelf life and enhancing quality monitoring through environmental responsiveness. Herein, a multifunctional controlled-release packaging film is developed by integrating acid-sensitive nanospheres assembled from copper ions, cinnamaldehyde (CA) and alizarin (ALI) into a matrix of carboxymethylcellulose and gelatin (CG), which can simultaneously monitor food spoilage while prolonging the storage period of fruits. The resulting CG-CA/ALI@Cu films demonstrate antibacterial and antioxidant properties. These attributes enable the effective preservation of fresh-cut pineapples for up to 7 days. Additionally, these films preserve the pH-responsive color-changing functionality of the ALI component, exhibiting noticeable color variations from purple to yellow during fruit storage. Most importantly, the UV-blocking ability, augmented barrier performance, enhanced mechanical qualities, high biocompatibility, and excellent biodegradability collectively reinforce the suitability of the CG-CA/ALI@Cu films for food packaging. This integrated food packaging platform offers a promising strategy for fruit preservation and freshness indication. ? 2025, The Authors. All rights reserved.