Food freeze dryer: Is freeze-dried food nutritious? The answer is: yes! Because it is different from the traditional high-temperature drying method, the principle of freeze-dried food is to remove the moisture in the food under the condition of low pressure and low temperature, so the nutrients and active substances in the food are not damaged, and their biological activity is maintained, The function, color, aroma, and taste of food have not changed much. In short, the water in the fruit is pumped into a low-temperature environment to retain its original nutrition. And has good rehydration, and does not contain any additives, is an ideal natural health food.
Freeze-dried food generally comes in two forms, one does not require rehydration and is more common in freeze-dried fruit slices, freeze-dried fresh milk, or yogurt candy. The other is the one that needs to be rehydrated, which is more common in freeze-dried mushroom powder, rice, porridge, vegetable bags, etc.
Compared with foods that do not require rehydration, the processing of foods that require rehydration is more complicated. In order to avoid freezing and puncturing the tissue inside the tissue, some excipients are often added to protect the cells and tissues, such as salt, sugar, milk powder, etc.
Rehydration type freeze-dried food has the characteristics of lightweight, fast rehydration, excellent color, aroma, and taste. Compared with traditional dried and puffed food, the nutritional and physical properties of freeze-dried food are better. Compared with canned food, freeze-dried food is easier to preserve, less prone to qualitative change, and has much lower costs in terms of transportation and storage, which has become the focus of many enterprises.
However, compared with traditional drying methods and high-temperature drying equipment, imported brand food freeze-drying equipment has the disadvantages of high equipment cost and long freeze-drying cycle, which has always been the difficulty that this technology cannot be widely promoted. With continuous development, domestic food freeze dryer manufacturers have improved their technology and recommended the Shanghai Tianfeng brand, and the cost has also been greatly reduced. In short, freeze-dried food retains the nutrients and physiologically active ingredients of food raw materials to the greatest extent maintaining the freshness of the food, the shape, color, and taste remain unchanged, and the shelf life is greatly extended.
