PDF(Pubmed)
Abstract：
Foodborne illness caused by consuming foods contaminated by pathogens remains threating to the public health. Despite considerable efforts of using renewable source materials, it is highly demanding to fabricate food packaging with multiple properties including eco-friendliness, bactericidal effect and biocompatibility. Here, sodium lignosulfonate (SL) and ZnO nanoparticles (ZnO NPs) were used as functional filler and structure components, respectively, on the cellulose nanofibers (CNFs)-based films, which endows the produced membrane (CNF/SL-ZnO) the UV-light blocking, antioxidant, and antimicrobial characteristics. Due to the interconnected polymeric structure, the prepared CNF/SL-ZnO films possessed considerable mechanical properties, thermal stability, and good moisture barrier capability. Moreover, the tested samples exhibited an improved shelf life in food packaging. Furthermore, metagenome analysis revealed superior biodegradability of obtained films with negligible side effect on the soil microenvironment. Therefore, the biocompatible, degradable, and antibacterial CNF/SL-ZnO film holds enormous potential for sustainable uses including food packaging.
摘要：
食用被病原体污染的食物引起的食源性疾病仍然威胁着公众健康。尽管在使用可再生来源材料方面付出了巨大的努力，制造具有多种特性的食品包装要求很高，包括生态友好性，杀菌效果和生物相容性。这里,木质素磺酸钠(SL)和ZnO纳米粒子(ZnONPs)作为功能填料和结构组分,分别,在纤维素纳米纤维(CNFs)基薄膜上，这赋予了所生产的膜（CNF/SL-ZnO）紫外线阻挡，抗氧化剂，和抗菌特性。由于相互连接的聚合物结构，制备的CNF/SL-ZnO薄膜具有相当的力学性能,热稳定性，和良好的防潮能力。此外，测试样品在食品包装中的保质期有所改善。此外，宏基因组分析显示，获得的薄膜具有出色的生物降解性，对土壤微环境的副作用可忽略不计。因此,生物相容性，可降解,和抗菌CNF/SL-ZnO薄膜具有巨大的潜力，可持续使用，包括食品包装。
