冻干食品是将新鲜食品如蔬菜、肉食、水产、中药材等快速冷冻后,再送入真空容器中升华脱水而成的食品。用冻干工艺制成的食品,不仅保持了食品的色、香、味、形,而且最大限度地保存了食品中的维生素、蛋白质等营养物质。食用时只要将该食品加水即可,在几分钟内就会复原为新鲜食品。冻干食品只要密封包装后,可在常温下长期贮存、运输和销售,三、五年内不变质。由于该食品只有5%的含水量,质量 Freeze-dried foods are fresh foods such as vegetables, meat, aquatic products, Chinese herbal medicines, etc., which are quickly frozen and then sent to vacuum containers for sublimation and dehydration. Foods made with lyophilization process not only maintain the color, aroma, taste and shape of foods, but also preserve vitamins, proteins and other nutrients in foods to the maximum. When it is eaten, just add water to the food and it will revert to fresh food within a few minutes. Freeze-dried foods can be stored, transported and sold at room temperature for a long time as long as they are sealed and not deteriorated within three to five years. Since the food has only 5% moisture content, the quality