Bananas are one of the major fruits in China, rich in pectin, sugars, tannins, vitamins, and various enzymes. Because bananas are highly susceptible to mechanical damage and require extremely high temperatures for storage and processing, there are currently processing methods such as drying bananas, frying bananas, or canning bananas that can cause significant damage to nutritional components and are prone to browning, which have not been accepted by consumers. Therefore, 99% of bananas are used for fresh consumption. Modern people's trust in green food and dependence on leisure food have led to the application of FD freeze-drying technology and fruit and vegetable freeze-drying machines in banana freeze-drying processing, maintaining the nutritional content and original color of banana processed products. Banana freeze-dried products are used as health and weight loss foods by people.

The basic principle of freeze-drying is based on the three state changes of water. The three states of solid, liquid, and gas can switch and coexist with each other at different temperatures and vacuum environments. The fruit and vegetable freeze-drying machine uses the sublimation principle to process and produce banana freeze-drying. The water in the low-temperature frozen banana material is separated into solid states, and then directly sublimated into water vapor in a vacuum environment without liquid, thus achieving the purpose of banana freeze-drying. The process flow of banana freeze-drying processing is as follows: selecting fresh and high-quality bananas - peeling - cutting/slicing - color protection - cleaning - draining - plating - low-temperature freezing - vacuum freeze-drying - unloading - weighing - testing - packaging. It is divided into three working areas: pre-processing area, freeze-drying processing area, and post-processing area. The entire processing process is carried out in accordance with food hygiene requirements. After being processed by a fruit and vegetable freeze-drying machine, bananas retain their original color, aroma, taste, shape, and nutritional components, as well as various vitamins, amino acids, and minerals. After freeze-drying, the moisture content is about 3%, and they can be stored at room temperature for a long time, making storage and transportation convenient.

At present, the application of fruit and vegetable freeze-drying machines in banana freeze-drying processing has successfully solved the problem of banana processing. The FZG fruit and vegetable freeze-drying machine has been widely promoted and applied in banana deep processing in various regions, providing technical solutions for banana industrialization.