Vacuum freeze dryer is a modern food preservation technology, which can effectively retain the nutrients, color, flavor and shape of food and the original biological activity, and has the effect of extending the shelf life. Below we will introduce in detail the principle, characteristics and application of vacuum freeze dryer in the field of food preservation.
First, the principle of vacuum freeze dryer.
The vacuum freeze dryer mainly uses low-temperature freezing technology to freeze the moisture in the food into ice, and then directly sublimate the ice into water vapor in a vacuum environment, so as to obtain dry food. This freeze-drying technology can effectively remove the moisture in the food without destroying the original structure of the food, and retain the original nutrients, color, flavor and shape and biological activity of the food.
Second, the characteristics of the vacuum freeze dryer.
1.Retention of nutrients: Vacuum freeze-drying technology can effectively remove the water in the food without destroying the original structure of the food, and retain the original nutrients, color, flavor and shape and biological activity of the food.
2.Extended shelf life: Vacuum freeze dryers can significantly extend the shelf life of food products due to their ability to effectively remove water from food.
3.Maintain the original taste: Vacuum freeze-drying technology can retain the original taste and texture of food, so that the food can maintain the original taste and quality when eating.
4.Easy to carry: The vacuum freeze dryer has the characteristics of small size and light weight, which is easy to carry and suitable for use in occasions such as home and wild survival.
5.Simple operation: The operation of the vacuum freeze dryer is simple and easy, and the general user can easily grasp it.
3. The application of vacuum freeze dryer in the field of food preservation.
1.Fruit preservation: Vacuum freeze-drying technology can effectively retain the nutrients and original color, flavor and shape in the fruit, and at the same time can extend the shelf life of the fruit. In situations where long-distance transportation or preservation is required, vacuum freeze dryers are an ideal technology for fruit preservation.
2.Meat preservation: Vacuum freeze-drying technology can effectively remove moisture from meat, thereby preventing meat spoilage and bacterial growth. At the same time, vacuum freeze-drying technology can also retain the original taste and texture of meat, so that the meat can maintain its original quality when eating.
3.Vegetable preservation: Vacuum freeze-drying technology can effectively retain the nutrients and original color, flavor and shape of vegetables, and at the same time prolong the shelf life of vegetables. In the case of long-distance transportation or preservation, vacuum freeze dryer is a very ideal vegetable preservation technology.
4.Grain preservation: Vacuum freeze-drying technology can effectively remove water from grains, thereby preventing grain spoilage and insect pests. At the same time, the vacuum freeze-drying technology can also retain the original taste and texture of the grain, so that the grain can maintain the original quality when eating.
5.Pharmaceutical preservation: Vacuum lyophilization technology can effectively remove water from the drug and protect the drug from the external environment, thereby extending the shelf life of the drug. At the same time, the vacuum lyophilization technology can also retain the original form and composition of the drug, so that the drug can maintain the original efficacy and quality when used.
In short, the vacuum freeze dryer is a very ideal food preservation technology, which can effectively remove the moisture in the food without destroying the original structure of the food, retain the original nutrients, color, flavor and biological activity of the food, and have the effect of extending the shelf life. In the future development, with people's increasing attention to food quality and safety and the continuous progress and improvement of technology, vacuum freeze dryers will be applied and promoted in more fields.