Dang Xugang, Cai Yanting, Wang Xuechuan
Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; State Key Laboratory of Polymer Materials Engineering (Sichuan University), Sichuan 610041, PR China.
Institute of Biomass and Function Materials & National Demonstration Centre for Experimental Light Chemistry Engineering Education, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
Food Chem. 2025 Jul 15;480:143922. doi: 10.1016/j.foodchem.2025.143922. Epub 2025 Mar 20.
To advance "green" food development, the use of more versatile biomass-based, biodegradable food packaging has been frequently proposed. Specifically, an innovative biomass-based active food packaging film (SEC) was hereby introduced based on an all-natural strategy with natural soy protein isolate (SPI) and carboxymethyl chitosan (CMCS) as raw materials. The results demonstrated the SEC had favorable anti-UV (UV blocking reached 98.5 %), antioxidant activity, biocompatibility and biodegradability, and the inhibition rates for Escherichia coli and Staphylococcus aureus reached 99.37 % and 97 %, respectively. Finally, the grape preservation experiment revealed that SEC could extend the shelf life of grapes more than 15 days. This study utilizes the active functional groups such as hydroxyl and amino groups on CMCS, which can undergo addition reactions with the epoxy groups on EGDE. This innovation not only maximizes the recycling value of natural biomass but also offers a novel approach to the sustainable production of green food packaging.
为推动“绿色”食品发展，人们经常提议使用更多用途的基于生物质的可生物降解食品包装。具体而言，在此基于以天然大豆分离蛋白（SPI）和羧甲基壳聚糖（CMCS）为原料的全天然策略，引入了一种创新的基于生物质的活性食品包装薄膜（SEC）。结果表明，SEC具有良好的抗紫外线性能（紫外线阻隔率达到98.5%）、抗氧化活性、生物相容性和生物降解性，对大肠杆菌和金黄色葡萄球菌的抑制率分别达到99.37%和97%。最后，葡萄保鲜实验表明，SEC可以将葡萄的货架期延长超过15天。本研究利用了CMCS上的羟基和氨基等活性官能团，它们可以与EGDE上的环氧基团发生加成反应。这一创新不仅使天然生物质的回收价值最大化，还为绿色食品包装的可持续生产提供了一种新方法。
