近20年,我国经济快速发展,食品销售从传统单一的杂货店、副食店逐步发展为连锁超市、便利店等现代食物体系,为居民购买和选择预包装食品提供了便利[1]。预包装食品是指预先定量包装或者制作在包装材料和容器中的食品,包括预先定量包装以及预先定量制作在包装材质和容器中并且在一定量限范围内具有统一的质量或体积标识的食品。随着食品工业的快速发展和居民 In the recent 20 years, with the rapid economic development in our country, food sales have gradually evolved from traditional single grocery stores and non-staple food stores to modern food systems such as supermarket chains and convenience stores, which have provided conveniences for residents to purchase and choose pre-packaged foods [1]. Pre-packaged foods are foods that have been prepackaged or packaged in packaging materials and containers, including prepackaged and pre-metered quantities in food packaging and containers that have a uniform mass or volume designation within a limited amount of range. With the rapid development of the food industry and residents