【作者】 张成倩； 覃东莉； 康壮丽； 李松南； 王君；

【Author】 Zhang Chengqian;Qin Dongli;Kang Zhuangli;Li Songnan;Wang Jun;School of Tourism and Cuisine,Yangzhou University;Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China,Institutes of Agricultural Science and Technology Development,Yangzhou University;

【机构】 扬州大学旅游烹饪学院； 扬州大学农业科技发展研究院教育部农业与农产品安全国际合作联合实验室；

【摘要】 碳点作为一种新兴的纳米材料,其绿色合成途径、生物相容性、低毒性以及优异的光学和化学性质受到广泛关注,近年来在食品抑菌领域展现出广阔的应用前景。静电纺丝是利用高压静电场力将聚合物溶液或熔体拉伸、细化,最终固化成纳米级或微米级纤维的技术,其纤维膜的比表面积大、孔隙率高、结构可控等结构特点为食品保鲜领域提供了一种高效、多功能、且环境友好的新型包装解决方案。本文以橙皮、菠萝皮和柠檬皮为原料,通过水热法制备碳点,并对其形貌、结构和抗菌性能进行表征;然后将其与静电纺丝技术进行联合制备负载碳点的纳米纤维膜,优化工艺参数,并对其多尺度结构、机械性能、热稳定性、亲疏水性和抑菌性进行系统评价;最终将其应用于三文鱼保鲜的实际包装场景中。本研究结果可为新型的静电纺丝生物基食品保鲜的应用发展提供一定的理论参考。更多还原

【Abstract】 Carbon dots,as an emerging nanomaterial,have garnered widespread attention due to their green synthesis pathway,biocompatibility,low toxicity,and excellent optical and chemical properties.In recent years,they have demonstrated broad application prospects in the field of food antibacterial preservation.Electrospinning is a technology that utilizes highvoltage electrostatic field forces to stretch and refine polymer solutions or melts,ultimately solidifying them into nanoscale or micron-scale fibers.Its fiber membranes exhibit structural characteristics such as large specific surface area,high porosity,and controllable structure,providing a new,efficient,multifunctional,and environmentally friendly packaging solution for the field of food preservation.In this paper,orange peel,pineapple peel,and lemon peel were used as raw materials to prepare carbon dots via the hydrothermal method,and their morphology,structure,and antibacterial properties were characterized.Then,they were combined with electrospinning technology to prepare nanofiber membranes loaded with carbon dots.The process parameters were optimized,and their multi-scale structure,mechanical properties,thermal stability,hydrophilicity/hydrophobicity,and antibacterial activity were systematically evaluated.Finally,they were applied in the actual packaging scenario of salmon preservation.The results of this study can provide a theoretical reference for the development of novel applications of electrospinning in biobased food preservation.更多还原