College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, Shandong, PR China.
State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Taian, Shandong 271018, PR China.
Bioresour Technol. 2024 Aug;406:131074. doi: 10.1016/j.biortech.2024.131074. Epub 2024 Jul 4.
The development of biodegradable antimicrobial bioplastics for food packaging holds great promise for solving the pollution and safety problems caused by petrochemical plastics and spoiled food. Herein, a natural active-bioplastic synthesized from citrus peel biomass is presented for perishable fruit preservation. These plastics are characterized by the nanoscale entanglement and recombinant hydrogen bonding between the endogenous pectin, polyphenols and cellulose micro/nanofibrils. They have attractive flexibility, tensile strength, gas barrier properties and antimicrobial activities, and can effectively extend the shelf life of perishable fruits such as banana and mango when used as food packaging. Cytotoxicity, degradability tests and life-cycle assessment show that these plastics had excellent nontoxicity and can be safely degraded or easily recycled. This work demonstrates a sustainable strategy for converting peel waste into eco-friendly bioplastics, providing a unique and novel insight into radically reducing the pollution and life-health threats posed by petrochemical plastics and spoiled food.
用于食品包装的可生物降解抗菌生物塑料的开发为解决石化塑料和变质食品所带来的污染和安全问题带来了巨大的希望。在此，我们提出了一种由柑橘皮生物质合成的天然活性生物塑料，用于易腐水果的保鲜。这些塑料的特点是内源性果胶、多酚和纤维素微/纳米纤维之间的纳米级缠结和重组氢键。它们具有吸引人的柔韧性、拉伸强度、气体阻隔性能和抗菌活性，可以有效地延长香蕉和芒果等易腐水果的货架期，用作食品包装。细胞毒性、降解性测试和生命周期评估表明，这些塑料具有优异的无毒性，可以安全降解或轻松回收。这项工作展示了一种将果皮废物转化为环保生物塑料的可持续策略，为从根本上减少石化塑料和变质食品所带来的污染和对生命健康的威胁提供了独特而新颖的思路。
