果蔬的含量一般在85%以上,保持果蔬不失水是保鲜的一个重要问题。因此,要求存放环境必须保持较高的相对湿度。塑料薄膜保湿包装基本上不存在失水萎蔫现象,但由于薄膜内湿度过大,使其内壁大量结露(是冷热空气相遇凝成的水珠),极易产生病菌,造成腐烂。 The content of fruits and vegetables is generally more than 85%, maintaining fruits and vegetables without losing water is an important issue fresh. Therefore, the storage environment must maintain a high relative humidity. Plastic film moisturizing packaging basically does not exist water wilting phenomenon, but due to excessive humidity within the film, so that a large number of condensation inside the wall (is the condensation of hot and cold air droplets of water droplets), easy to produce germs, causing decay.