自清洁抗菌性由天然蛋白质制成的食品包装膜

Food safety is a major concern in China and also in the whole world. The foodborne illness, which is the primary problem of food safety, can be controlled and avoided by antimicrobial food packaging. Currently, the weak antimicrobial activity and the short antimicrobial duration are the problems of antimicrobial packaging material. The objective of this project is to make a self-cleaning antimicrobial food packaging with essential oils encapsulated nano/microspheres as the surface. The antimicrobial activity and duration is expected to be improved by the core-shell nano/microencaplation which can control the release of the essential oils which is the core material. The adhesion of the bacteria on the packaging surface will be weakened by the superhydrophobicity and the self-cleaning property of the surface. To achieve a non-toxic, biodegradable, biocompatible, and edible food packaging, zein, a major corn protein, is the only material involved other than the essential oils. Previously, we have successfully made nano/microencapdulation of drugs and flavors by zein for the applications in drug delivery and food. We have also made hydrophobic zein films by self-assembly monolayer (SAM) assisted evaporation-induced self-assembly (EISA) without molecular modification or low energy surface coating. In this project, various SAMs will be studied for the formation of the superhydrophobic zein film by SAM assisted EISA. The zein encapsulation nano/microspheres of essential oils will be applied to form the surface of the superhydophobic film to enable its antimicrobial property. The formation of the inexpensive, high antimicrobial activity self-cleaning zein film using nanotechnology and surface hydrophobicity control will solve the main problems in food safety and benefit the society.

食品安全是中国乃至全世界面临的一个重要问题。抗菌性的食品包装材料能够起到避免食源性疾病产生和传播的作用。目前研究和应用中的抗菌性食品包装材料存在抗菌能力不够强和抗菌效果不持久的问题。本课题拟采用核壳包裹香精油与自清洁表面相结合的技术，研制新型自清洁抗菌性食品包装膜。为制造无毒无环境污染可降解可食用的生物相容性材料，玉米醇溶蛋白将被选作该膜中除香精油以外唯一的参与物质。本课题组已经成功研制纳米和微米级玉米醇溶蛋白核壳包裹药物和风味物质应用于给药和食品领域。同时也成功制成无分子改型无化学镀层的完全由玉米醇溶蛋白构成的疏水膜。本课题组将采用自组装单分子层辅助的蒸发引导的自组装方法来研制超疏水性的玉米醇溶蛋白膜。核壳包裹香精油的玉米醇溶蛋白微球将用来构成该膜的表面结构。利用纳米和表面新技术制造价格低廉抗菌高效的自清洁抗菌膜将有效解决诸多食品安全问题为人民日常生活服务。

食品安全是中国乃至全世界面临的一个重要问题。抗菌性的食品包装材料能够起到避免食源性疾病产生和传播的作用。目前研究和应用中的抗菌性食品包装材料存在抗菌能力不够强和抗菌效果不持久的问题。本课题拟采用核壳包裹香精油与自清洁表面相结合的技术，研制新型自清洁抗菌性食品包装膜。为制造无毒无环境污染可降解可食用的生物相容性材料，玉米醇溶蛋白将被选作该膜中除香精油以外唯一的参与物质。本课题组已经成功研制纳米和微米级玉米醇溶蛋白核壳包裹药物和风味物质应用于给药和食品领域。同时也成功制成无分子改型无化学镀层的完全由玉米醇溶蛋白构成的疏水膜。本课题组将采用自组装单分子层辅助的蒸发引导的自组装方法来研制超疏水性的玉米醇溶蛋白膜。核壳包裹香精油的玉米醇溶蛋白微球将用来构成该膜的表面结构。利用纳米和表面新技术制造价格低廉抗菌高效的自清洁抗菌膜将有效解决诸多食品安全问题为人民日常生活服务。