Food freeze-drying technology is a technology that removes water from food through freezing and vacuum dehydration, thereby retaining its nutrients and flavor. This technique has a wide range of applications in the food industry, such as making instant noodles, dried meat, dried vegetables, etc.
First of all, we need to understand the basic composition of food freeze-drying equipment. Generally speaking, food freeze-drying equipment is mainly composed of four parts: refrigeration system, vacuum system, heating system and control system. The refrigeration system is responsible for freezing the food to a certain low temperature, the vacuum system is responsible for pumping out the water in the food at low temperature, the heating system is responsible for heating the food in a vacuum environment, and the control system is responsible for the operation and monitoring of the whole equipment.
Next, I will go into detail about how to use food freeze-drying equipment.
1. Preparation stage: First, we need to put the food into the freezer tray, and then put the freezer tray into the freezer compartment of the equipment. Then, we need to set the freezing temperature and time of the device, usually the freezing temperature is -40 for 24 hours.
2. Vacuum stage: When the food is frozen to a certain low temperature, we need to start the vacuum system to pump out the water in the food. In this process, we need to set the vacuum degree and the time of vacuuming, usually the vacuum degree is 10pa, and the time of vacuuming is 24 hours.
3. Heating stage: When the water in the food is pumped out, we need to start the heating system to heat the food. In this process, we need to set the heating temperature and time, usually the heating temperature is 50 and the time is 24 hours.
4. Cooling stage: When the food is heated, we need to cool it to room temperature. In this process, we do not need to set any parameters, the device will automatically cool down.
Take out the food: When the food has cooled to room temperature, we can remove it from the freezer tray and then pack and store it.
In the process of using food freeze-drying equipment, we need to pay attention to the following points:
1. The operation of the equipment must be carried out by professionals, and non-professionals are not allowed to operate without authorization.
2. During the operation of the equipment, if any abnormal situation is found, the operation of the equipment should be stopped immediately, and the professionals should be notified in time for inspection and maintenance.
3. During the operation of the equipment, the equipment should be cleaned and maintained regularly to ensure the normal operation of the equipment.
4. During the operation of the equipment, the safety operation procedures should be strictly observed to prevent safety accidents.