果胶基复合包装在果蔬保鲜中的应用

果胶是一种广泛存在于植物细胞壁中的天然高分子材料，因具有生物相容性、易修饰和改性、可降解等优点被逐渐应用于果蔬保鲜中。果胶基复合包装因其包装性能更佳、保鲜效果更好而打破了单一果胶包装在果蔬保鲜中的局限逐渐成为果蔬的主要包装方式。本文介绍了果胶的结构及成膜特性，从塑化剂、天然聚合物、生物活性物质和纳米材料四个方面阐述了果胶基复合包装制备的主要成分，并对果胶基复合薄膜和涂膜两种方式在果蔬保鲜中的应用进行了综述并提出了展望，以期为今后食品的保鲜贮藏和新型包装材料的发展提供技术借鉴。

Application of Pectin-based Composite Packaging in the Preservation of Fruits and Vegetables

Pectin is a natural polymer material that widely exists in plant cell walls. It is gradually used in the preservation of fruits and vegetables due to its advantages of biocompatibility, easy modification and modification, and degradability. Pectin-based composite packaging has gradually become the main packaging method of fruits and vegetables because of its better packaging performance and better preservation effect, breaking the limitation of single pectin packaging in the preservation of fruits and vegetables. In this paper, the structure and film-forming properties of pectin are introduced. The main components of pectin-based composite packaging are expounded from four aspects: Plasticizer, natural polymer, bioactive substances and nanomaterials. The application of the two methods of thin film and coating in the preservation of fruits and vegetables is reviewed and prospects are put forward, in order to provide technical reference for the preservation and storage of food and the development of new packaging materials in the future.